CarbonSteel
Well-Known Member
Neither of the gasoline engines in the Wrangler should be blindly ran for 10K OCIs (discussing the 4 cylinder and 6 cylinder here--not the 392, though I would not run a 10K OCI in it either). The 2.0T is turbocharged and is a direct injection engine which is harder on oil due to the turbocharger and the direct injection has fuel dilution which reduces the viscosity of the oil. There have been a number of people post UOAs of 2.0T oil and the viscosity is always substantially reduced.I agree! I think a lot of people get caught up with adages and rules from eons ago about vehicles and the vehicles today are far and away more advanced, I mean who would think someone would go 10K plus miles in between oil changes like some cars can do today? As previously stated, follow the manufacture's guidelines and keep your records and if something goes, wrong, put them on the hook. All that said, sorry that happened to you though.
While the 3.6L is not a DI, unless you are testing the oil to understand the health of it, it could (and likely will) be out of active additive at 10K miles. I have used both Rotella Gas Truck and Valvoline Extended Protection in my 3.6L and neither of those oils would have active additive remaining at 10K miles--this is despite the iOLM showing more than 50% of the oil health remaining. The UOAs show an entirely different data point--the active additive is almost completely used up at 5K miles and would be all used up by 7K at the latest.
As I said before, there is no minimum oil change interval posted anywhere by FCA (and why would there be) and therefore, changing the oil earlier than the recommendation does not in and of itself cause issues with the warranty.
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