Cadillac Escalade, EXT and ESV Forum - 2007-2014 Discussion, DIC oil change interval with new oil in Cadillac Escalade Forums; I have always used the regular mobile one synthetic oil because the manual calls for it. I understand the ECU ...
I have always used the regular mobile one synthetic oil because the manual calls for it. I understand the ECU is programmed for a certain number of revolutions depending on engine temperature and whatever other variables - before it goes from 100% to 0% engine oil life using this specific oil
If I start to use the mobile one extended life oil, Am I supposed to ignore the DIC and change oil at 15,000 miles?
Or will the ECU somehow pick up that I am using better oil and then give me more miles for the cycle of 100% to 0%??
The OLM calculates oil life based on a number of things (RPM, temp, run time, mileage...), it does not sample the oil. So no, it won't adjust to different oils.
I believe GMs MAX change interval is the same for your car as it is for mine, 10K miles or 12 months, check your owners manual. Honestly, if you're already using a synthetic, there won't be any advantage to switching to a "better" (more expensive) one.
I change mine every 6-8k miles. But I drive pretty hard, and change my own oil... Currently using royal purple, but for the first year and a half I was using mobil1. I don't know if the RP is worth the extra money, but I got a crazy deal on some and bought about 60 quarts and about 12 filters. Currently use it in all of my vehicles.