Rick's Free Auto Repair Advice

Posts Tagged: ZDDP

Synthetic oil

Should I use Synthetic oil Lately I’ve seen lots of discussions on auto help forums regarding synthetic oil. I’m not surprised that many of those comments comes from Amzoil dealers. They’re extremely loyal to their brand. I’m not going to diss Amzoil–it’s a good product. But it’s important to keep in mind that Amzoil isn’t a refiner (as far as I know). They buy base synthetic oil on the open market. The same is true of Royal Purple. Just because they don’t refine their base oil themselves doesn’t make them … Read More


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