Oil change at one year or at low oil life?

[JET_83]

I’d love to see how much oil it used after waiting 7,500 miles per oil change

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[ShadowsPapa]

I’d love to see how much oil it used after waiting 7,500 miles per oil change

Why? Because some idiot convinced you that going that long would cause an engine to burn oil forever and ever?
BS.
My AMX went that long between changes. Drove it all over Colorado from home and back, never had to add oil. The car didn't use even a quart in 2,000 miles by the time I traded it off with almost 90,000 miles on it. You are so hooked on that bogus oil burning bit.

 

[JET_83]

@ShadowsPapa, enlighten me on why with synthetic 7,500-10,000 is what’s recommended per synthetic since it’s that much more superior then. Also explain the changes in viscosity along with breakdown and the thinning along the way. I also might add how jet black my oil is after only 4,000 miles on synthetic when I change after it goes in clear and I don’t drive mine hard at all. Why even recommended changing every 3,000 on conventional then?

 

[JET_83]

Why? Because some idiot convinced you that going that long would cause an engine to burn oil forever and ever?
BS.
My AMX went that long between changes. Drove it all over Colorado from home and back, never had to add oil. The car didn't use even a quart in 2,000 miles by the time I traded it off with almost 90,000 miles on it. You are so hooked on that bogus oil burning bit.

Didn’t use a quart, so you admit that it might have burned up to half a quart which is a good deal amount which prolly would’ve been avoided had it been changed in sooner intervals

 

[ShadowsPapa]

Didn’t use a quart, so you admit that it might have burned up to half a quart which is a good deal amount which prolly would’ve been avoided had it been changed in sooner intervals

The bull shit is dripping out of your ears you are so full of it.
No, back then with the design technology, clearances, rings, and so on, it was the normal use for any engine. Even if you changed every 2,000 miles, that was the expected use simply because that's how engines were.
You are so hooked on your myth, there's no amount of science or engineering or documentation that will convince you that your uncle Bubba was wrong.
It really didn't matter if you went 2,000 miles or 7,000 miles, oil consumption was a constant.
As a mechanic - and person who did oil changes and did a few weeks at a gas station (full service) I know very well how much oil cars back then used - or didn't use - and the oil change interval made no difference.
Once again I am challenging you to show your source for the crap you spew. I've said it twice before, here it is again - "show your source".
You can't, you just keep trolling and insisting the world is wrong, and you are correct.
I'd also bet you've never even had an engine apart yourself, and if you did, that's the state it stayed in............

 

[Vtur]

My ex had a Prelude that went and went and went - that engine likely outlived the rest of the car. My oldest son drove it for a while. Holes in the fenders but man was it a reliable and nice running car.

I had a '92 w/180k miles and a'96 Prelude with the H22 vtec motor. I boost that motor for over 2 years and couldn't kill it.

 

[TroutFishingInAmerica]

I have not been able to drive my 3.6 JT that much since I bought it new, eleven months ago. Oil life shows at 80%. Mileage is less than 2K. Should I just wait until it really needs it or change it the one-year mark?

I'm just a random guy on the internet and this is my opinion. Opinions are like ass holes, everyone has one, and mine stinks. I did my first oil change at 3,000 for no other reason then that's how I always have done it. Every change after that has been when oil life is 80-85% used up. If I went a year without a change (unlikely) and it said I still have some life left I would change it anyway. I don't over think any of this, I just keep will within the recommendation and drive on.

 

[TwelveGaugeSage]

Didn’t use a quart, so you admit that it might have burned up to half a quart which is a good deal amount which prolly would’ve been avoided had it been changed in sooner intervals

Please, stop. You are embarrassing yourself.

 

[ShadowsPapa]

I'm just a random guy on the internet and this is my opinion. Opinions are like ass holes, everyone has one, and mine stinks. I did my first oil change at 3,000 for no other reason then that's how I always have done it. Every change after that has been when oil life is 80-85% used up. If I went a year without a change (unlikely) and it said I still have some life left I would change it anyway. I don't over think any of this, I just keep will within the recommendation and drive on.

Sounds good.

I always do the first one earlier because that's where the real "wear material" will be - the first 3,000 (picking the number I have always used)
For the old school engines I build, it's less than that, 2,000-2,500 but then those are different designs. I did my JT's first at about 3,000 as I recall.
The one example of a 1970s manual I gave of 7,500 or 7 months would be roughly the equivalent of "10,000 or 1 year" today. You don't want that contamination sitting there for that long.

The 1970s saw some big changes in engines - better rings, better materials, hardened valve seats and better valve seals. That's a biggy as that's where a lot of the oil that was "used" in engines back then went. Valves.
We were knurling guides and using Perfect Circle positive seals by the late 70s. Oil consumption through the guides all but disappeared in that era. Even lowly little AMC changed valve seal materials and I have the TSBs about that topic in my library.

 

[jac04]

I have not been able to drive my 3.6 JT that much since I bought it new, eleven months ago. Oil life shows at 80%. Mileage is less than 2K. Should I just wait until it really needs it or change it the one-year mark?

Pay no attention to the bickering going on here. If you would like your engine warranty to remain in full effect during the warranty period, change it at 1 year no matter the miles. It is very clearly defined in your Owners Manual:

 

[ShadowsPapa]

There ya go, confusing with facts and books.

 

[dcmdon]

I have a car that I put 2500 miles per year. I change the oil once per year. I don't know if I need it. But for the $50 it costs me, I don't care.

 

[ShadowsPapa]

I have a car that I put 2500 miles per year. I change the oil once per year. I don't know if I need it. But for the $50 it costs me, I don't care.

Owner manuals, service manuals, and more, have said there's a time minimum for many decades.
So without realizing it, or maybe even without caring, you are following the book(s).
I wonder what the manual for the postal Jeep my mother used to drive says.............
By the way, the photos of the 1977 owner manual I posted earlier cover the 258, 304 and 360 and other engines used in Jeep back then.
So yes, it's relative to Jeep and thus on-topic as far as Jeeps

 

[Fouts]

Oil changes are very cheap insurance in the long run. Who knows, maybe doesn't help but I know doesn't hurt. And I kinda like doing it.

 

[dcmdon]

Owner manuals, service manuals, and more, have said there's a time minimum for many decades.
So without realizing it, or maybe even without caring, you are following the book(s).
I wonder what the manual for the postal Jeep my mother used to drive says.............
By the way, the photos of the 1977 owner manual I posted earlier cover the 258, 304 and 360 and other engines used in Jeep back then.
So yes, it's relative to Jeep and thus on-topic as far as Jeeps

Its funny. The car is a 65 Chevy convertible that my grandfather bought new with a 283. My aunt ran it out of oil circa 1975 and he had a gas station put a junk engine in it from a wrecked car. In 1985, I bought a 350 junk yard motor, tore it down and put slightly higher compression pistons in it, a "larger" cam and a Rochester Quadrajet. I have no idea what the motor came out of. Ha. But its been 35 years since I built it and its still running.

Its funny how modern engines have changed our perspective. I put 456 gears in it so back in the day it was considered pretty quick. Its still probably quicker than my Gladiator. But its a pig compared to anything modern that has even the slightest engine upgrade.

For what its worth, its always burned about 1/2 quart between roughly 2500 mile oil changes. I don't even bother topping it off because those old chevy motors tended to blow off the top half quart anyway.

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