HPL No VII 5w-30 in L83

Joined
Jul 21, 2008
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918
Location
Phila, PA
With the move of L87 engines moving from a 0w-20 to a 0w-40, I am now confident that the LT engines will live a longer life with a oil with a higher HTHS.

0w-40 seems like quite the move going 2 levels up. Might even hit fuel mileage a little. Also significant VII that are prone to shear and really make up a percent of the oil that would be better occupied with other ingredients in the formulation.

In my 2016 Suburban with the 5.3 (L83) I am looking at going from Amsoil 0w-20 Sig.Series (2.7 hths) to HPL 5w-30 No VII (hths 3.399). Seems like a happy balance with a nice jump in HTHS. Looking forward to getting this in, before the warm weather arrives along with a CarQuest Premium 84502 filter waiting to go on. Will run the full OLM change interval.

I know my L83 is not part of the recall, but the engine is in the same engine family and longevity is essential.

I was initially going to go with Amsoil 5w-30 SS, but (hths of 3.1), I like the hths that the HPL NoVII has, and I wanted to stay with a Dexos1gen3 formulation.
 
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That definitely seems like a smart move. My Corvette has the LT1 and the standard Mobil 1 5w30 that was the factory fill only has about a 3.1 HTHS so right from the beginning I went with ESP Formula 5w30 for it’s better 3.5 HTHS.
 
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