[BlackNova]

my 540 is done this week. (finally) and I need to pick up some oil for it. Whats a good break in oil for me to buy? And oil to run it with in general. I used to run 20/50 on my last motor but it was a flat tappit cam and 10.1 489.

the 540 is estimated 750-800hp, 11.8.1 compression. Solid roller with Morel lifters. thanks

 

[427L88]

Does your machinist have a recommendation? I usually use straight 30W, as that's what I was told to use, yet it could have been due to the flat tappets.

 

[fenns70]

http://www.amsoil.com/shop/by-product/motor-oil/racing/

 

[94ttss]

My machinist had me use straight 30w and some Lucas break in additive. Dynoed with it, put motor in car fired it up, warmed it up and checked for leaks, drove it around to put some heat in it, pulled back on the lift and changed it to valvoline vr1 10w30.

 

[Chevyobsessed]

Yeah,..a good 30 weight or a 10w-30 either one,..just make sure it's a quality conventional oil; not a synthetic.

Also, pour a bottle of GM's EOS (Engine Oil Supplement) then you're good.

Good luck!

 

[71454Chevelle]

Brad Penn 30w Break-in oil. :yes: :thumbsup:

http://www.penngrade1.com/Products/High-Performance/Break-In-Oil.aspx

http://www.amref.com/CMSFiles/File/bp_pb/7120_BP_PENN-GRADE_1_Break-In_Oil_PB.pdf

http://theoilwarehouse.com/page/1hu7y/Home.html

 

[BlackNova]

just bought straight 30w and the lucas engine additive with a fram hp4 filter, once I dump that oil is synthetic the way to go?

 

[Slick71ss]

Valvoline vr1 synthetic 10w-30 is a good oil after break in.

 

[cv67]

:yes:

Same here dont know what the fear of runing synthetic is thats all I run from the gate no problems! New cars are almost all syn these days with no break in miles.

 

[Busted Knuckles]

Brad Penn or Joe Gibbs break-in oil.

 

[427L88]

No fear, only a ring seating issue with synths. Guess it depends on how your cylinders are honed etc.