1998 Chevrolet S10 4.3L
169,429 mi.
Out: Castrol conventional, weight unknown, Protech filter
In: Mobil 1 HM 10W30, Purolator L24011
After taking the S10 in for a past-due rotate and balance I noticed an oil change sticker on the upper corner of the windshield. Crawled under the truck and sure enough there was a white Protech oil filter staring me in the face. I was [censored]!!!
So, on the way home I stopped in at Wally world and got a Puro filter and a jug of the CORRECT oil I've been using for years. Mobil 1 HM 10W30. As soon as I got home I got out the ramps and undid what this shop had done!!!
This really sucks because I do my oil changes every 5,000 mi. and at 170,000 I'm doing a tune-up and having intake gaskets replaced. So I'll probably be doing another oil change in less than a month!!!