[oil pan 4]

Originally Posted by Phase

Are you even testing your oil quality or are you just going off owners manuals and random made up math numbers? I’ve had my synthetic oil tested after even 12,000 miles of winter eco mode and it’s still looks barely used. I even asked the technicians their opinion on my “ dirty oil” when changing it and they’d say it looks like I’ve only driven 4,000 miles yet I’d be clocking In 10-12k miles. They’d say the oil looks like it could go another few thousand miles but I’m the paying customer so it’s up to me if I wanna continue to change it. Again, I’m doing Valvoline full synthetic oil changes every 10k miles, sometimes more, sometimes less, and I don’t stress about it. I always run in eco mode. Sport mode only in mornings to get hot air in winter, or sport mode in city driving when I need to boost it fast or interstate merging in heavy traffic

Before you accuse some one of making up numbers, maybe you should read the whole post.

Originally Posted by oil pan 4

How do I know what the viscosity is and how much fuel is in the oil?
Testing.

How else would I know the numeric percentage of fuel and that the viscosity of the oil is out of spec because of fuel dilution?
Or that adding 10w-30 oil doesn't thicken it up enough?