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Old 09-07-2020, 12:54 AM   #1
pilar
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Default Oil change, thoughts

Ok my 2014 Chevy service manual says change the oil every 7500 miles
I was just watching a video saying that is a waste of money and a gas Moter should be about 10,000-12,000 between changing
And a diesel about 15,000-20,000 on a full synthetic oil ( Schaffer oil) I use castrol GTX Magnatech ,
What y’all thoughts on this ? 7500 to short or 10-12 to long
Wife drives a CTS and drives till the computer says it’s time
So have no idea on her mileage Before the change.

P.S when to change serpentine belt ? I am @ 50,000 and have a brake recall so it’s dealership bound soon

Last edited by pilar; 09-07-2020 at 01:25 AM.
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Old 09-07-2020, 03:06 AM   #2
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Quote:
Originally Posted by pilar View Post
Ok my 2014 Chevy service manual says change the oil every 7500 miles
I was just watching a video saying that is a waste of money and a gas Moter should be about 10,000-12,000 between changing
And a diesel about 15,000-20,000 on a full synthetic oil ( Schaffer oil) I use castrol GTX Magnatech ,
What yíall thoughts on this ? 7500 to short or 10-12 to long
Wife drives a CTS and drives till the computer says itís time
So have no idea on her mileage Before the change.

P.S when to change serpentine belt ? I am @ 50,000 and have a brake recall so itís dealership bound soon

I have a 2017 F250 6.7 and change the oil every 5k so I can have my tires rotated with the oil change and water fuel separator done at the same time every 15k. My last oil change, air filter, tire rotation and water fuel separator was around $460. To me itís not worth my time to make the extra trip to rotate the tires in between oil changes.

My wifeís 2017 Audi S7 gets an oil change every 10k or once a year. Iíve blown 3 tires in 8k miles so I factor an extra $470 x2 for every oil change.


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Old 09-07-2020, 03:10 AM   #3
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what happened to we were supposed to be changing our oil every 3,000 miles?....ive heard 3k....ive heard 5k....its a mystery 2 me
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Old 09-07-2020, 04:11 AM   #4
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what happened to we were supposed to be changing our oil every 3,000 miles?....ive heard 3k....ive heard 5k....its a mystery 2 me
Oil last a longer nowadays than when the old 3K was the rule.

Doing it every 5K makes for easy math. 5,10,15,20 and so on.

I change mine about every 7k, the minder will come in at 7500 or so. (6.7PSD)

My wife's truck is on the 5k regiment, always shows life left on the oil death countdown screen.
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Old 09-07-2020, 09:23 AM   #5
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what happened to we were supposed to be changing our oil every 3,000 miles?....ive heard 3k....ive heard 5k....its a mystery 2 me
Conventional oil 3000. Synthetic oil 5000+. Also the brands make the difference.

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Old 09-07-2020, 05:24 PM   #6
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I have a 2017 F250 6.7 and change the oil every 5k so I can have my tires rotated with the oil change and water fuel separator done at the same time every 15k. My last oil change, air filter, tire rotation and water fuel separator was around $460. To me it’s not worth my time to make the extra trip to rotate the tires in between oil changes.

My wife’s 2017 Audi S7 gets an oil change every 10k or once a year. I’ve blown 3 tires in 8k miles so I factor an extra $470 x2 for every oil change.


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Man, how much do they charge to rotate your tires? ��. Seems like they are knocking your head off on rotation or air filter.
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Old 09-07-2020, 05:26 PM   #7
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Default Oil change, thoughts

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Man, how much do they charge to rotate your tires? ��. Seems like they are knocking your head off on rotation or air filter.

$100 for air filter and probably $25 to $35 to rotate tires. They did top off the DPF,


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Old 09-07-2020, 06:08 PM   #8
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5000-7000 mile oil changes with Mobile 1 full Synthetic in my Ď02 TRD Tundra. Truck runs like new.
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Old 09-08-2020, 01:24 PM   #9
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synthetic is cheaper than it used to be so several years ago I went to it, every 10k miles. I used to be a every 3k miles with conventional oil guy but that gets really old, really quick since I change my own.
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Old 09-07-2020, 06:19 AM   #10
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04 tundra has oil changes every 5000 miles for 380,000 miles. I'll stick with that routine on my 16 tundra.
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Old 09-07-2020, 06:33 AM   #11
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I use a full synthetic and change at 10,000 miles. Schaefer is what I use in diesel engines. It is good stuff. Most of my driving is highway miles so I'm pretty sure that I could go longer between changes. Talking with the Schaefer rep several years ago, he was testing and not changing until the lab report said that the oil was beginning to break down. I remember him saying that he had tested at 14,000 miles and the oil was still in good shape. I'm not that interested in pulling samples and mailing them off for testing, so I just settled on 10K as a reasonable point.
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Old 09-07-2020, 07:34 AM   #12
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Its 10k for us. 2018 5.3 tahoe and 2012 f250 6.2 with 202,000 miles.
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Old 09-07-2020, 07:53 AM   #13
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This is a good read.

https://www.f150forum.com/www.f150fo...d.php?t=372752

I will say, though,that I don't buy into the lifetime transmission fluid and stuff like that. I do still believe that changing ]our fluids (oil, differential, tranny...) gives you an idea of how your vehicle is operating. My 14 F150 is just under 100k, so I just did the plugs, and next I'll do tranny, transfer case, rear diff, and belts just so I can say they're good at that mileage milestone.

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Old 09-07-2020, 08:30 AM   #14
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Default Oil change, thoughts

One thing I live by on vehicles, is if there is anything telling me to change the oil and I cant recall when it should of been done, I change it. Cheap insurance. Every time I ride with my wife I look at the oil change sticker and then her mileage. I never go off of the meter built into the vehicle unless the sticker is gone for some reason.

But gas motor, 5k miles. Ford 6.7 diesel, 7.5k miles.


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Old 09-07-2020, 08:38 AM   #15
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Quote:
Originally Posted by pilar View Post
Ok my 2014 Chevy service manual says change the oil every 7500 miles
I was just watching a video saying that is a waste of money and a gas Moter should be about 10,000-12,000 between changing
And a diesel about 15,000-20,000 on a full synthetic oil ( Schaffer oil) I use castrol GTX Magnatech ,
What yíall thoughts on this ? 7500 to short or 10-12 to long
Wife drives a CTS and drives till the computer says itís time
So have no idea on her mileage Before the change.

P.S when to change serpentine belt ? I am @ 50,000 and have a brake recall so itís dealership bound soon
Your 2014 only has 50k miles? Wow. I feel each vehicle is different. Some can go longer. On a gas rig 7k is about all I want to go
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Old 09-07-2020, 08:39 AM   #16
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10k here, and change the filter at 5k.
Mobile 1 Synthetic EP states it's good for 15k, so I figure at 10k I'm fine.
This is on a Tundra.
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Old 09-07-2020, 04:08 PM   #17
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10k here, and change the filter at 5k.
Mobile 1 Synthetic EP states it's good for 15k, so I figure at 10k I'm fine.
This is on a Tundra.
Shouldn't it be the opposite? If the book, oil, or filter (or all) say to change at 15k then you an bet it's good for more miles than that.

Companies have to sell as much as they can. Zero chance they stretch to the max for what they say. Same with the car manual.

And what's changed to make oil last longer, the oil or car designs?

Does anyone simple pull the dipstick and look at the oil to see if it's dirty?
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Old 09-07-2020, 04:15 PM   #18
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Shouldn't it be the opposite? If the book, oil, or filter (or all) say to change at 15k then you an bet it's good for more miles than that.

Companies have to sell as much as they can. Zero chance they stretch to the max for what they say. Same with the car manual.

And what's changed to make oil last longer, the oil or car designs?

Does anyone simple pull the dipstick and look at the oil to see if it's dirty?
Both have changed. Engines have tighter tolerances these days and oils are better quality with better performing additive packages.

Im running and changing full synthetic oils at 10k. The owners manuals on my vehicles are saying to change standard oil at 10k so im good.

I buy oil filters, air filters etc in bulk. They are super cheap. I buy my oil with rebates or really good sales.

Im doing full synthetic oil changes for 23 bucks or less. Im not worried that i could save a few more pennies and i know its done right.
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Old 11-24-2020, 01:43 PM   #19
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Quote:
Originally Posted by MadHatter View Post
10k here, and change the filter at 5k.
Mobile 1 Synthetic EP states it's good for 15k, so I figure at 10k I'm fine.
This is on a Tundra.
Same, I go 10-12k.

2006 tundra, 185k miles on it

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Old 09-07-2020, 08:42 AM   #20
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I’ve been going 10-12k between oil changes for a while now. I run full synthetic. My Tundra has 164k miles and my commuter car has 289k miles. If you’re changing every 5k miles you’re just wasting money. It absolutely does no damage to go 10,12 or even 15k miles between changes if you run a quality synthetic oil.
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Old 09-07-2020, 09:15 AM   #21
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2015 6.7L F-250. Every 5k


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Old 09-07-2020, 09:25 AM   #22
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Oil changes are cheap compared to a new engine. Every 5,000 miles on all my vehicles.
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Old 09-07-2020, 11:09 AM   #23
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Oil changes are cheap compared to a new engine. Every 5,000 miles on all my vehicles.
Smart man.
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Old 09-07-2020, 09:27 AM   #24
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I run Mobil 1 synthetic in my 99 Tacoma and change it every 10k

I have checked it before at 5k and it still looked like when I put it in, 7.5k and it was tinted but not dark so I figure 10k is fine.

Truck has 291k on it and still going fine

Matter of fact it is getting oil changed in the driveway before lunch
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Old 11-24-2020, 01:53 PM   #25
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yep, since goin to synthetic on everything I own, its 10K mi. for me.

Conventional oil I used to go 5K max, and its real dirty!

Again, depends on your driving habits too. A lot of highway driving is going to let you go longer between changes. IMO
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Old 09-07-2020, 09:39 AM   #26
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Mobile 1 Synthetic at 10k or once a year.. I've done that with my 2008 F150 since new. With most of vehicles it ends up being once a year, My F150 only has 97k miles on it. I guess I don't drive a lot anymore. The RV is the only one that may get close to 10k per year.
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Old 09-07-2020, 09:50 AM   #27
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Clean new oil is the life of your engine especially with all the sophisticated new pollution and fuel economy gadgets in motors today like variable cam and valve timing, cam drive chains and other advance/retard components. I am in the old school 3000 mile class and even more so now with all the new engine features.
It helps that most engines now hold several more quarts of oil to help it last longer. Even so it still gets dirty that you can't see or feel. All sorts of corrosive contaminants from blow by on the rings no matter how good the rings seal. My new Cheby holds 8 quarts but that's a small price to pay compared to replacing the motor before 200k miles. One VVT lifter or pump valve failure is all it takes.
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Old 09-07-2020, 09:55 AM   #28
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When I was running Shaffer in my last 3 trucks I changed the oil every 30k . Changed the filter every 10k . I would send the oil to them and they would analyze it and tell me to change it or run it longer . The shop that sent it off for me closed down so Iím not doing that anymore.
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Old 09-07-2020, 10:02 AM   #29
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I change it around 5000 miles but I use a synthetic blend rather than full synthetic.
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Old 09-07-2020, 10:13 AM   #30
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I changed mine every 15K, full synthetic, on my 2013 Ram. 300,000 miles no issues, no engine blow by. Was running great when I sold it.
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Old 09-07-2020, 10:21 AM   #31
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My trailblazer died at 300k. I changed the oil about every 20-30k
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Old 09-07-2020, 04:10 PM   #32
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Quote:
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My trailblazer died at 300k. I changed the oil about every 20-30k
I knew a guy that hanged his oil once LOL It was so thick it took forever to drain. Didn't seem to hurt the truck.
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Old 09-07-2020, 10:32 AM   #33
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Have 2017 ram 2500 with 6.4 hemi. Get oil changed every 5k with tire rotation. Manual says 7500 but do it at 5k. Uses full synthetic. No issues with it. Wufe has a 2015 ram 1500 with 5.7 hemi and change it at 5000 with tire rotation. No issues with either truck. Both trucks only 50,000 on em.
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Old 09-07-2020, 10:40 AM   #34
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Every 5K regardless of what manual says, even though it’s what is recommended with my Toyota. Easy math to remember when to change it and tires get rotated same time. I’m sure I could go longer but I would have to make separate trips to have tires rotated. Plus, I get my services done at the dealer which does some odd number point inspection every time I go in. Having things checked out every 5K vs 10K could prevent a big problem later down the road. The difference in cost for me of having the oil changed every 5K vs 10K is about $160 a year. That’s not a lot of savings over the course of a year. Plus my dealer gets to look over my truck 4 times a year vs 2.
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Old 09-07-2020, 11:16 AM   #35
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Default Oil change, thoughts

Engines burn much cleaner that in the past. Oil technologies are better as well.

I use regular Rotella in my Cummins. Iíve run it as high as 16k miles. Had a Blackstone oil analysis and the oil was still sufficient.

Now I normally change around 7500 miles, rotate my tires and the same time and change fuel filters every other change.


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Old 09-08-2020, 02:22 PM   #36
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Quote:
Originally Posted by Mike D View Post
Engines burn much cleaner that in the past. Oil technologies are better as well.

I use regular Rotella in my Cummins. Iíve run it as high as 16k miles. Had a Blackstone oil analysis and the oil was still sufficient.

Now I normally change around 7500 miles, rotate my tires and the same time and change fuel filters every other change.


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This is spot on. I run Rotella in both my cummins and motorcraft in the powerstroke.
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Old 09-07-2020, 11:22 AM   #37
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Chevys use a little oil, you need to be checking your dip stick, actually open the hood every now and then lol. If I drove 15k with out an oil change It would cost me a motor I think. I'm changing it every 5500 miles about with mobile 1 full synthetic
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Old 09-07-2020, 02:21 PM   #38
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Change every 5000 miles and use Mobil one. 17' F-150 ecoboost.
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Old 09-07-2020, 03:09 PM   #39
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Amsoil Signature Series 25,000 mile oil with Amsoil filter. I change once a year so it’s about 15,000 miles.
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Old 09-07-2020, 03:26 PM   #40
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2013 F150 Ecoboost 5k miles Motorcraft synthetic blend.

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Old 09-07-2020, 03:27 PM   #41
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Rotella T6 in my diesels every 10k, plenty good enough
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Old 09-07-2020, 04:28 PM   #42
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I've change the oil in all my vehicles at 10,000 miles using Mobil 1 synthetic for about 20 years, although I have swapped to Schaeffer's for the last few years. The guys at the quick oil change place all got a kick out if the green Schaeffer's oil and rubbed it on their fingers. They said their fingers were still slick even after wiping it off. After one guy tried that, they all had to check it out. /https://www.schaefferoil.com/

I have sent off the oil from each vehicle at 10k miles for testing and the report always came back that it was still good. However 10k is good enough for me, so that's when I change it.
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Old 09-08-2020, 01:28 PM   #43
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I own a repair shop. Variable Valve Timing. Pay for more oil changes or pay for expensive repairs later.
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Old 09-08-2020, 01:39 PM   #44
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I change it every 5000 miles or so and use synthetic blend. Also rotate tires then. Truck has 208k on it and still going strong. I will let it go longer if mostly doing highway driving but if I'm pulling my camper, a lot of off road driving where it's dusty, or a lot of stop and go driving, I tend to stick with every 5k.

Serpentine belt can probably wait to 100k. This coming from someone whose belt broke on a family vacation that had wife, 3 kids, and a dog on the side of the highway in July and had to get towed to a campground to spend the night to get a belt the next day. But I had over 175k on the belt when that happened. I think you're safe waiting a little longer but don't wait like I did.
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Old 09-08-2020, 02:17 PM   #45
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2018 GMC 2500 Duramax- I use Rotella , whenever my truck tells me I need to. I think people overthink this.
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Old 09-08-2020, 02:45 PM   #46
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I shoot for 7000 and usually get around to it about 8 or 9000.
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Old 09-08-2020, 02:57 PM   #47
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I have a 16 6.2 f250. I change it every 5k that way i can change my oil and get my tires taken care of at the same time makes it easier
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Old 09-08-2020, 06:28 PM   #48
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10k now with rotella 15w 40

Any less than that and you are just throwing money away

Unless you are HEAVY TOWING daily
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Old 09-08-2020, 06:42 PM   #49
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1 of the biggest things I see is people no longer check and top off their oil. Check and top it off every 3K or so. Feel the oil. Smell it. If something seems off change it. 5-7K on today's vehicles is ok. Also, take into consideration your conditions. Are you stuck in Houston traffic idling for 5-7k or actual driving. Does it take you 4 months or 14 months to reach 5-7k? As far as the serpentine belt. Noise, cracks, uneven wear replace it. I see belts going 75-125k these days before I recommend replacing. Also, do not wait for the dummy light to change oil. Change it on a schedule.
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Old 09-08-2020, 07:29 PM   #50
sharpstick35
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Join Date: Feb 2017
Location: odessa tx
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all of you that change more often, how many times a year do you get it changed. i manage fleet vehicles that hit 10k every 2 weeks ( 6.7 ford) so i have 40 trucks getting oil changed every 3 weeks on average. the 2 biggest issues i run into with these trucks are the fuel system and the A/C
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