Recent content by TBoneTX1234

I just scored 48 quarts of Castrol GTX SynBlend (listed on the dexos-1 certification list) for $1/qt at AutoZone.com. Had to do it in groups of 6 at the first store and groups of 12 at the other two stores. This should hold me for about 4 years. Garage space is sadly limited...

I greatly appreciate everyone's informed suggestions and obvious passion. It's clear that there are several options, so it appears that I'll have to run the numbers to figure out whether it's cheaper to: 1) buy a 5-gal. jug + extra quart from Walmart or elsewhere + filter; 2) order the Kendall...

Well, two service advisors recommended against full synthetic, so I'll keep probing in hopes of a general consensus. Again, I appreciate all the input. I'll price the offerings at Walmart and other places. Logging off for now.

I'm very grateful to all respondents. I just called a couple of GM service advisors, who say that 5W30 is mandatory, any dexos-1-certified oil is fine, and synthetic blend is recommended. Full synthetic is not recommended, and some conventional oils have the dexos-1 certification. One advisor...

Originally Posted By: 99Saturn Here's the dexos 1 list too. Thanks -- I'd just stumbled upon this myself. There are a lot of choices. In the past, I've taken my own oil & filter to my mechanic, who has done my oil changes for $15. I'll have to see if his Shell brands were what he was referring...

Thanks. What are the very cheapest store-purchasable options? Does synthetic oil need to be changed on a schedule, or only when the "engine oil life" indicator drops below a certain percentage?

This is my first post. I've read Motor Oil University, and a couple of searches have yielded nothing. I just bought a used (20,300-mi.) 2014 Chevy Impala LT sedan with a 3.6-L V6 engine. The recommendation is for 5W30 GM oil only. I don't have the owner's manual at hand to relay the details of...