Recent content by ShermanFirefly

Thank you again, everyone! I have learned more about motor oil in the last week than the 10-years prior. I used to think that all synthetic was similar performing 'miracle' oil, and a 6K OCI was safe. The stupid GM oil monitor will indicate 7500mi between changes - and that with the THIMBLE...

Fortunately, I live near Lake Michigan, which has a moderating effect. There are deeper spikes, but 0 to +10F ambient is a repeatable range in the coldest period. The lowest this car ever saw was -18F ambient. Wind chills are another story. I know 5W will flow, but the engine doesn't sound happy...

WOW! I'm VERY impressed with the level of knowledge here! Unbelievable! As for the questions, I use a 6-7K mi OCI always with oversized filters, Mostly M1-210A's. 9-Speed Automatic with AWD. When I looked into the oil fill hole, I saw a lot of dark varnish, and there was some thicker gunk...

I have a 2018 GM 2.0T and have used Mobil 1 Advanced Fuel Economy 0w30 for over 120K miles in northern Michigan. Even with a 6K OCI and very oversized M1-210A filters, the engine innards 'seemed' dirtier than I expected just viewing through the oil fill hole, so I have just finished 4 OCI's with...

Nice job on the well written reporting!

Yes, I saw that but it was the M1-108A. I posted because up to that point no one knew 1) exactly when the new M1-210A was going hit the shelves, and 2) if it was going to be made in Vietnam or South Korea.

I've been using these filters for a couple of my cars for many years. After reading about the fall of Champion and MH on this site, I was about to look into into switching to the Carquest Premium, but the closest store is rather far from me. Hopefully this is good news, since i can continue to...