How long did it take you to reach those 3,200 miles?
So you did it in 12 months, I’m scheduled to do it in 6 months.
Oil is cheap. I don't know why people insist on following ridiculous 10k mile intervals. Youtube is filled with videos of mechanics tearing down Toyota engines that have cylinder scoring and the owners are confused saying "I changed the oil every 10k like Toyota recommends". Yeah, 10k oil changes will get you to the end of the warranty. If you want to keep it longer, 5k max. 3k would be way better.I think I saw in another thread that you used Pennzoil synthetic?? These lifter failures seem rather common and, IMHO, the AFM system is an over-complicated POS, prone to failure.
My 'guess' would be that the interval between oil changes is more important than the actual oil itself. Lotsa guys are driving 10k miles between oil/filter changes, and that's just begging for disaster IMO. I have dear friend who recently bought a top-of-the-line Toyota Tundra '1794' edition, a V-6 with TWIN turbos. He's got 5k miles on it and I'm begging him to come use my lift and we'll change O/F, especially as he's got twin turbos. But he doesn't want to hear it. He says dealer will change O/F for free at 10k miles!
I own AFM-equipped Escalade EXT 6.2L and I will NEVER exceed 3k miles on O/F, using Mobil 1.
How many miles were on the truck when you bought it? Any idea of the service history before you bought it?
48k. I looked up the service history and I see a gap so I think they was taking it to a local oil shop. I seen a sticker on the windshield when I bought it as well from an independent place. I was thinking that some places don’t report it. I am sure this truck was a lease. I can see the truck was taken care of though but I can’t put my finger on the oil changes. The dealer did say the engine was clean and the camshaft was good. I do take great care of the truck though. Is there anything else I can do or how to tell?
For the most part, I agree.... but.... when you know with 100% certainty that you are dealing with a complex, fragile and trouble-prone lifter system that truly depends on clean engine oil, why take the chance?? An AFM lifter failure could cost thousands of $$$ to repair, or might even grenade your engine.
48k seems too high for a lease, most are 10 or 12k miles a year for up to three years unless someone pays for the extra miles, at which the lease becomes less financially appealing. I bought mine off of a lease and at 16k miles the oil had only been changed twice, once just before I took delivery and once at about 10,000 miles (probably when the OLM started complaining). Leased vehicles are not cared for. Although oil is a major factor in engine failure it is not the only factor. If I knew with 100% certainty that changing the oil every 5,000 miles would prevent any engine failures then I would do it, but there are no such assurances. I trust the engineers who designed these things. I have the dealer change the oil at or below 20% life or every 12 months.
Nope, dexos is GM's way of saying synthetic oil but in a nutshell, anything that is API SN PLUS rated ought to work in modern GM vehicles.
