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Amazon recently showed the Pennzoil Ultra Platinum 5W30 with the new ILSAC GF-6A and API SP rating on their website. I bought a 5-qt jug and the oil I received had the old SN+ rating with a manufacturing date code of Jan. 2020. Not totally unexpected since the new specs didn't become official...

Have been using Ultra Platinum 5W30 for several years but the lack of Dexos1 Gen2 certification is concerning since I have a GDI engine with timing chain. Pennzoil has reformulated the Platinum 5W30 to meet D1 G2 and am looking at that to replace the Ultra Platinum on the next oil change. Any...

As indicated on Pennzoil's website, Platinum 10W30 is "SN Plus Ready." Was looking over the stock in my local Walmart and found nothing on the 5-quart jugs that indicated anything other than SN. Date codes were as recent as Nov 2017. Since I have a GDI engine, using an oil that addresses LSPI is...

Am a bit confused by recent information suggesting that synthetic oil, compared to conventional (dino) oil, has "drain-away" issues leaving metal surfaces unprotected during dry-start conditions. The industry consensus, however, is that synthetic oil provides better wear protection at startup...

I've always serviced my own cars because of poor quality work by most dealerships. Two years ago, I got tired of crawling under cars and decided to let the dealer do the servicing. The 5K and 10K mile service went well, but not so for the 15K. I found out the dealer used 5W-20 instead of 5W-30...

Mobil 1 used to be my favorite synthetic oil with 5W-30 in the wife's 2008 Prius and 0W-40 Euro Formula in my BMW 530i with 10K mile OCIs on both. At 50K miles, the Prius started using oil and I figured that the low-tension rings that Toyota used was the cause but numerous UOAs showing high iron...