best type of oil for 71 340 engine
- Thread starter matthew110366
- Start date
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Ya, zinc goes without saying in a flat tappet engine. If you run a roller you can run pretty much anything. Weight depends on the bearing clearance. I keep it simple and run Valvoline 10/30 conventional and some zinc additive.
It happens. lol
I'm surprised there's only 27 responses in 10 years. Folks are tired of answering the question! There might be some wrong answers but no right answer. LOL
ir3333
Well-Known Member
Unless it's a big hp build or you're racing it, Penzoil 5W30.
..but nobody wants to hear that
..but nobody wants to hear that
mullinax95
Well-Known Member
I really like the Joe Gibbs Driven oil. 10w-30 is what my engine builder told me to use.
Gator
Mopar or No Car
In my Hi Performance 340 I am running Pennzoil 10W-40 with a can of STP at every oil change and 20k miles later engine is still running strong with no problems....
I’ve had outstanding results with Mobil 1 for over 30 years.
i ran royal purple 10-40 xpr synthetic for 9 years on my 70 340 never a problem when torn down to add new alu heads and check **** out at 7,000 mile it looked new inside almost no wear on any of the parts . i added zzdp the first 3 oil changes nothing after that ,
let me add every engine is different no idea how yours was built , just stating my experience
let me add every engine is different no idea how yours was built , just stating my experience
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