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out of curiousity what brand oil and weights is everyone using............my neighbor runs straight 30 vavoline...........:)Unsure
 

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I don't feel tardy
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:)hand
In my 30 year old 454 BBC with 250 total hours...
20-50 Castrol or 20-50 Valvoline Racing depending on availlability.
 

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jetboataholic
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Are these conventional or synthetic?
 

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Anything with a CI-4/CJ-4 rating. Higher zinc content in the additive package.
I've been running supertech 15-40 in everything I own for the last 4 years. Zero problems.

Rotella's good too but a little more expensive.
 

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20-50 Valvoline racing.
 

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rotella sae 30
 
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