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Well thanks for the advice. So Mobil1 is supposed to be better oil, but people reported ticking? Must be the answer to my problem. Also, just a tip: I fill my oil filter to the top with oil before I put it on. It has never been run dry. The startup after an oil change is less than a second...

Wow. That was fast. Thanks. Yes, I realize that the intervals are short. When it is coming up on 3k miles, I look at my schedule and I do it well before because if I wait too long, it might go over. Just habit and I want my engine to last at least into the 200-250k range. I change all the...

Hey everyone. First post on this forum here. I have a 1998 GMC Jimmy (4.3L V6) with almost 122k miles and I take good care of it, especially with the oil changes. I have used Royal Purple in the past before they switched to the new SN formula. But mostly I have used Mobil1 High Mileage over the...