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Should you change your engine oil?

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Should you change your engine oil?

Old 09-07-2016, 07:01 PM
  #21  
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Originally Posted by Steamer Lane View Post
That's a nice demonstration but you don't say how regular the change was. One you say is regular (with no data) the other you say is irregular (with no data) I would guess one is within 6000mi and the other is never.

You care to qualify?
The Civic had regular oil changes and the audi was never.
This wasn't really a test. Its just a best case/worst case comparison.
It's not meant to be submitted for peer review.

Civic
https://www.reddit.com/r/Justrolledi...hx_d16y5_with/

Audi
https://www.reddit.com/r/pics/commen...thout_an_oil/?

Yummy

Last edited by wormvine; 09-07-2016 at 07:17 PM.
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Old 09-07-2016, 07:03 PM
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What's the deal with the Audi head? (Aside from being disgusting)...I didn't know they made a straight six. Or is it something like VW's vr6?
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Old 09-07-2016, 07:48 PM
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Originally Posted by YFMF View Post
I had a Chevy Cavalier bought brand new in 1980, after 7,000 miles and a 2nd oil change I pulled the valve cover just to see. It looked a lot closer to pick #2 then pick #1.

Maybe it was the grade of the oil, maybe just city driving I have no idea but I wasn't happy with what I saw.
My father had a 1983 cavalier that had the same issue. Ended up in a junkyard with well under 100,000 miles.
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Old 09-08-2016, 06:01 AM
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Everything I own tells me when an oil change is due. When it says it needs one is when it gets one. I use synthetic but do not extend the change interval.
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Old 09-08-2016, 06:30 AM
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Originally Posted by Dillard88 View Post
Oil changes are cheap engines are not. We recommend 4,000 on synthetic blend and 6,000 on full synthetic
I agree. I change my own oil every 3000 miles. My truck has 302,000 miles on it. It's cheap and easy to do. Hope I get another 300K!
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Old 09-08-2016, 06:40 AM
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Originally Posted by Parkrat View Post
I agree. I change my own oil every 3000 miles. My truck has 302,000 miles on it. It's cheap and easy to do. Hope I get another 300K!
So 100 oil changes.
In 357,000 miles you would do probably 118 oil changes.
I did 18 with the same results in the same amount of miles.
Engine running strong smooth and smokeless.
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Old 09-08-2016, 06:42 AM
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Originally Posted by twollman View Post
Damn that lower picture is nasty. The recommended interval on my tundra is 10,000 miles using synthetic oil. Concerns me a little but I followed that on my last tundra without any issues.
Don't be worried. I maintain a large fleet. We use full synthetic oils in every box. We still operate vehicles that don't use oil nor leak oil between our 10k intervals that have well over 300K. And to boot, these are company run units, so sometimes they are run pretty hard.
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Old 09-08-2016, 06:45 AM
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Have any of you other THTers wasted time at:

http://bobistheoilguy.com/

?
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Old 09-08-2016, 08:59 AM
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Originally Posted by waybomb View Post
So 100 oil changes.
In 357,000 miles you would do probably 118 oil changes.
I did 18 with the same results in the same amount of miles.
Engine running strong smooth and smokeless.
I don't use Mobil One in my truck. Just Pennzoil 10w30. I guess it's more peace of mind. Sometimes I got to 3500 miles. I enjoy changing it.

Not too worried about the 100 extra oil changes over the last 14 years. That's cheap compared to my boating habit.

Congrats on getting that much mileage out of your MB. Impressive.
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Old 09-08-2016, 11:00 AM
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Originally Posted by Nardiellojitsu View Post
Same here when I bought my tundra I could not believe the once every 10k theory. While it's under warranty I change it my self at 5k and let them do it at the 10k
Ok guys - time to stop worrying about your 10k oil change

Last 3 trucks - all with 10k changes with Mobil 1
'92 1500 - rear-ended and totaled at 250k miles- still ran like a top and never burned a drop of oil.

'98 1500 - sold at 275k miles - still ran great but the whole truck was getting a bit "tired".

'02 2500 HD diesel - still driving it. Currently 358,000 miles. Aiming for 500,000.

And I promise you, I've run the dog-sh-- out of all my trucks. Towing, hauling, hauling as-, etc.

Your trucks will be fine.
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Old 09-08-2016, 11:05 AM
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Originally Posted by mv rapscallion View Post
What's the deal with the Audi head? (Aside from being disgusting)...I didn't know they made a straight six. Or is it something like VW's vr6?
Audi uses the same VW VR6
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Old 09-08-2016, 11:09 AM
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Originally Posted by IES99 View Post
Have any of you other THTers wasted time at:

http://bobistheoilguy.com/

?
yep
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Old 09-08-2016, 11:10 AM
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Originally Posted by Gnrphil View Post
X2 Audi is the bottom.
Yup...preventative mAintenance is so important
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Old 09-08-2016, 11:14 AM
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Changing oil is such an easy and fast deal, I can't see anyone skipping it. Me- every 3-4k miles.
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Old 09-08-2016, 11:25 AM
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Originally Posted by waybomb View Post
So 100 oil changes.
In 357,000 miles you would do probably 118 oil changes.
I did 18 with the same results in the same amount of miles.
Engine running strong smooth and smokeless.
Most of your driving done on the Highway?
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Old 09-08-2016, 11:35 AM
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My dad had company back in the 80's and he never changed the oil (companies now days make you). Well they gave him such a good deal on the car he purchased it from the company. Afraid to screw it up he kept going and got to around 165,000 before it died. Now this was back in the early 80's when motors didn't last as long.
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Old 09-08-2016, 12:22 PM
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Originally Posted by iFishMD View Post
Audi uses the same VW VR6
Learn something new everyday.
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Old 09-08-2016, 02:01 PM
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What manufacturer currently recommends 3k mile oil changes?
The oil change computers are the best things, they go based on loading , run time, cycles. If I did an oil change on my truck and drove down to Florida and back in a week, I'd technically have to do another oil change. The engine may have only run a fraction of the time that it would with the same miles done in the city stop and go traffic. So, use good oil and change them when the car tells you to. Anything more is just throwing away money.
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Old 09-08-2016, 02:09 PM
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About 20 years ago I was getting my jeep serviced when I noticed mechanics using putty knives to dig oil out of a relatively new looking jeep. I asked what happened and they said "you know how people dream about buying a doctor's wife's car? This one's wife didn't change the oil until it just quit"
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Old 09-08-2016, 02:31 PM
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I have read that you can fill your engine full of kerosene and run it at idle to dissolve the sludge. Sort of like the dunks decarb method. There are many threads about it.

http://www.bobistheoilguy.com/forums...Number=1820403

http://www.fordf150.net/forums/viewtopic.php?t=52453

http://community.cartalk.com/t/flush...kerosene/77785

http://www.automotiveforums.com/t924...ine_flush.html
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