408 engine oil
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408 engine oil
So i'm runnig in my 408 i'm changing the oil regularly, its under 1,000 miles, for the first few hundered miles I ran the motor on Kendall GT1 10W40, it seamed like a decent value as I knew I needed couple gallons of oil to wear this motor in. The valvetrain was very quiet with the GT1 mineral oil. As I assume Kendall GT1 is otherwise Motorcraft 10W40 both made by conoco phillips.
So I decided it ran well with 10W40 didn't consume any oil, 500 miles dump in some Castrol GTX 10W30, sounds like a sowing machine used half a quart in 250 miles I'm going back to some heavier 40 weight oil again run an oil analysis, before this motor is switched to expensive synthetic oil.
What kinda oil does everyone else use in larger bore LS motors etc?
So I decided it ran well with 10W40 didn't consume any oil, 500 miles dump in some Castrol GTX 10W30, sounds like a sowing machine used half a quart in 250 miles I'm going back to some heavier 40 weight oil again run an oil analysis, before this motor is switched to expensive synthetic oil.
What kinda oil does everyone else use in larger bore LS motors etc?
#3
Originally Posted by 11 Bravo
Well, I am using Castrol 10w30. The motor has barely over 1000 miles, but it's using alot of oil. Sounds like I need to try 10w40.
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That Castrol GTX 10W30 ended up using a 1 quart of oil in 250 miles, switched over to Valvoline VR1 20W50, no oil consumption as of now just passing 1,000 miles on this motor. Normally i'm hesitant to use thick oil but read this months GMHTP, a rep from Lunati was talking about how they use greater bearing clearance in aftermarket crankshafts. Their reasoning tighter main bearing clearance creates more heat. So with a stroker set up I don't see a problem with 20W50.
Valvoline VR1 20W50 was only $2.80 or so quart at autozone.
http://www.valvoline.com/pages/produ...asp?product=50
i'm finding 38-40psi at idle and 60+ WOT
Valvoline VR1 20W50 was only $2.80 or so quart at autozone.
http://www.valvoline.com/pages/produ...asp?product=50
i'm finding 38-40psi at idle and 60+ WOT