Originally Posted By: TurboTravis
You're wasting money using a boutique oil in a 1990 305 Chevy SBC (coming from someone that has owned several).
Yes, you're wasting money using boutique oil in any moderately built 50's to 80's OHV V-8....The engines are just not that stressed like a smaller modern engine...It's a known fact a Gen 1 Chevy small block can support over 500 HP with the stock oiling system and 55 psi oil pressure...and that's on 80's Dino oil...Just use an oil with around 1200 zinc and phos...Readily available and affordable Rotella T4 for example.....If you want some Moly in your ZDDP oil, go with Valvoline ZR 1...
You're wasting money using a boutique oil in a 1990 305 Chevy SBC (coming from someone that has owned several).
Yes, you're wasting money using boutique oil in any moderately built 50's to 80's OHV V-8....The engines are just not that stressed like a smaller modern engine...It's a known fact a Gen 1 Chevy small block can support over 500 HP with the stock oiling system and 55 psi oil pressure...and that's on 80's Dino oil...Just use an oil with around 1200 zinc and phos...Readily available and affordable Rotella T4 for example.....If you want some Moly in your ZDDP oil, go with Valvoline ZR 1...