M1 5w30 1993 Chevy C1500 5.0 3,000mi

[cchase]

This is my UOA from my Chevy truck, first ever.

This oil change was ~6 months, during which the truck idled for many hours, short trips, heavy towing (3200 lb boat, 4000 lb tractor, 7000 lb chipper) and a 1,000 mile road trip. For the past 2 months it has only been run for very short periods of time.

The truck has 367,255 currently and just got filled with GC 0w30 for the first time...

For purposes of being clear, the engine has about 170,000 on it, it got a new long block somewhere around 190,000 miles.

 

[Turk]

367k miles...

 

[hate2work]

"Whistles the Jeopardy theme"

 

[PT1]

Don't ever sell it. It may go to 500k. I had a 66 chcvy 230-6 go over 500k. Once it hit 350k it got to the point where I just wanted to see how far it would go.

 

[Turk]

Ok, 170k.

Which oil filter...?

 

[beast3300]

Very impressive!

 

[cchase]

Originally Posted By: tpitcher
Ok, 170k.

Which oil filter...?



Yes, sorry, not as exciting as you were thinking. I thought about putting actual mileage on the Blackstone but figured their averages don't account for mileage anyway and it would make it very hard for me to calculate the mileage on each subsequent UOA to try to go from a number I don't know off the top of my head and subtract it from the current mileage. The truck is still in great shape otherwise though so hopefully this engine won't suffer the same fate as the other.

Oil filter was a Wix.

 

[tig1]

With the Univ. average for this type of engine, and your UOA with the metal numbers, and the high mileage on your engine, you just can't predict a shorter engine life based on UOA reports and high metal numbers. GM engines often show high metal numbers but their engines have very good longivity.

 

[cchase]

Originally Posted By: tig1
With the Univ. average for this type of engine, and your UOA with the metal numbers, and the high mileage on your engine, you just can't predict a shorter engine life based on UOA reports and high metal numbers. GM engines often show high metal numbers but their engines have very good longivity.


What do you mean? Or what are you saying that in reference to?

 

[tig1]

Some say if wear metals are as high as the univ averages that is for your engine then the engine life will be shortened. GM engines often show higher wear metals than other makes, but as we know GM engines have a good history of long lived engines. With that said it appears UOA wear metals may not be an indicator of engine wear.

 

[cchase]

Originally Posted By: tig1
Some say if wear metals are as high as the univ averages that is for your engine then the engine life will be shortened. GM engines often show higher wear metals than other makes, but as we know GM engines have a good history of long lived engines. With that said it appears UOA wear metals may not be an indicator of engine wear.


Gotcha, I was afraid I worded something poorly in my speaking of the first engine the truck had. A valve went south on that engine and a long block was under $1000 and at the time the truck was a DD and it was easier to just put a new engine in than try to do a valve job.

I'm kind of surprised the wear levels are as low as they are on this OCI given the towing the truck was doing.

 

[addyguy]

You're just wasting oil and money here, like many do.

M1 can go a LOT further than 3k. If use is very low, go for a 1-year interval.

If you can't 'handle' 1 year, do this interval with dino.....

 

[cchase]

Originally Posted By: addyguy
You're just wasting oil and money here, like many do.

M1 can go a LOT further than 3k. If use is very low, go for a 1-year interval.

If you can't 'handle' 1 year, do this interval with dino.....


I agree that the oil could certainly go longer. But for ~$44/year it comes out to be about 12 cents per day on oil. I can handle that. For the same mileage I'm spending ~$2.40 per day on gas so there's certainly savings to be had elsewhere.