SHELL ROTELLA 10 W 30

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SHELL ROTELLA 10 W 30 #392328 07/16/17 06:05 PM
Joined: Feb 2008 Posts: 3,801 Likes: 1 Willoughby Hills, Ohio bobg1951chevy OP ChatMaster - 3,000
OP bobg1951chevy ChatMaster - 3,000 Joined: Feb 2008 Posts: 3,801 Likes: 1 Willoughby Hills, Ohio	I got into a conversation about the zinc levels of oil, etc., was told the 10 W 30 Shell Rotella oil labels do not adhere to the "SL" or "SM" codes on their labels. I'm told their labels only have T1 or T2, etc. Any insight as to why the difference in Shell Rotella codes is appreciated. 1951 Chevy Styleline Deluxe 2 door sedan / purchased from second owner 6-19-2000.

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Re: SHELL ROTELLA 10 W 30 bobg1951chevy #392339 07/16/17 09:16 PM
Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi. Chev Nut ChatMaster - 25,000
Chev Nut ChatMaster - 25,000 Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi.	The SL, SM and latest SN ratings are for gas engine oils. Diesel oils are rated with CK-4, CJ-4, Ci-4, etc. Latest rating for gas engine oil in the number/letter catagory is GF-5. The GF-5 oil for gas engines has 800 PPM of zinc. Shell Rotella in 15W-40 has 1200 PPM and not sure of the zinc content od Rotella 10W-30. Oil for gas engines and oil for diesel engines have different additive packages. You can do a search on Shell Rotella to get more answers. Last edited by Chev Nut; 07/16/17 09:18 PM. Gene Schneider

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