Don't get me started on "experiments". I think your using the word " limited" a little to lightly. An example of the value of analyzing you oil? I built a camaro a fees years back with my buddy and upon receiving our oil review we discovered elevated levels of coolant in the oil. The amount was very low and the oil did not show any signs of contamination I.e milky, separated or foamy. We decided to pull the heads and low and behold we had a split in the head gasket. $25 for the gasket and 35$ for the test. That motor has 70k more miles on it today. That motor had a ton of track duty and we would most likely have spun the bearings or blown it up. That was very Valuable info.

 

That is also a completely different situation from a factory built vehicle with a 100K mile warranty on the powertrain. They don't warrant it for that long unless they are pretty certain you're not going to have the types of problems you might experience with a hand built motor that is also doing duty at track speeds. You basically had an experiment on your hands, and so it was valuable to continue to test for potential problems under those conditions. But for a factory vehicle that goes back and forth to the grocery store, and pulls the trailer a few times a year, it's of limited value other than to satisfy your curiosity.

 

I agree. With a factory engine under warranty it's overkill. Who cares if she blows up if you don't have to pay for it. I do think that when my warranty is close to expiring I will have it done on the R/T to help with the decision if she's heathy enough to keep in the post warranty days.

 

I don't agree. First of all let's use 60k for a powertrain warranty since most manufacturers offer that. So the engine only has to last for 60k miles; after that, they couldn't care less. What if you plan to keep the car for 150k plus miles? You could have trouble down the road because you followed the car's OLM to the letter.

Also the manufacturers set oil change intervals for normal and severe service. Severe service OCI is usually half that of normal. So how do you know for sure where you fall on the scale?

Many UOAs on bitog.com have shown the oil on its last breath when following the OLM.

 

Funny how so many take oil seriously and argue it to the point of no return, then go and buy 22's or 24's and don't upgrade their braking system. lol

Truck can't stop as fast and may have issues under a panic stop but hey, my oil is clean! hahahahahaha

At the end of the day do what makes you sleep better at night and use whatever oil you want. It's your truck to deal with, nobody else's.

 

I thought just about everyone (including Kia) offers a 100K powertrain warranty now. They do so because engines -- with regular oil and normally scheduled oil changes -- will easily last that long. They don't put that warranty on engines unless they are VERY sure the engine will last beyond that, not that it will JUST make it.

 

+1

I hate oil threads, always an argument no matter what forum.

 

+2 This is getting Silly...
Just keep up on your oil changes and all will be well
STEVE

 

I guess more than I realized... Didn't realize GM was now up to 100k.

But Ford, Toyota, Honda, VW, Mazda, BMW, Audi, Mercedes, Scion, Subaru and others are all 60k or less.

http://www.cars.com/go/advice/Story....ry=manWarranty

Plus some engines (e.g. Honda V6's?) are supposedly "known sludgers" when following the recommended OCI.

 

Yeah, but how many of the 100K warranties are non-transferrable, meaning after the original owner the warrantied period is down to 50K. The fine print in the 100K warranty may also limit the coverage to emissions related systems so the engine itself could still fail and not be covered.