Recommended Engine Oil ?

Aubrey N Bruneau · 05-05-2012, 03:08 AM

Lots of info there, Bill. Thanks for posting.
I ordered a case of 5 / 30 Royal Purple racing oil.
I have .003" - .0035" clearance on crank, and .008"+ piston to wall. Very low tension Total Seal oil rings, and using regular teflon valve stem seals ( 3/8" guides ). Lifters are solid flat tappet, light weight coated tool steel.
I started the engine today, and ran it for about 20 minutes ( flushed the cooling system ). When this thing is cool, say 70-100 degrees F, oil pressure at 1600 RPM is over 70.
I don't like it.

05-05-2012, 03:08 AM	#19
Aubrey N Bruneau Member Join Date: Sep 2003 Location: South Eastern Alberta, Canada Posts: 311 Likes: 6 Liked 7 Times in 3 Posts	Re: Recommended Engine Oil ? Lots of info there, Bill. Thanks for posting. I ordered a case of 5 / 30 Royal Purple racing oil. I have .003" - .0035" clearance on crank, and .008"+ piston to wall. Very low tension Total Seal oil rings, and using regular teflon valve stem seals ( 3/8" guides ). Lifters are solid flat tappet, light weight coated tool steel. I started the engine today, and ran it for about 20 minutes ( flushed the cooling system ). When this thing is cool, say 70-100 degrees F, oil pressure at 1600 RPM is over 70. I don't like it. __________________ Aubrey N Bruneau 6409 C/S 62 BelAir sport coupe, 409 HP 409 Last edited by Aubrey N Bruneau; 05-05-2012 at 11:32 AM.