How to safely first start a fresh modified engine?

[Greg Rust]

There are several Shell 15/40 diesel oils, which one? And if you say Rimula X I'll smack you down :knock:

Na that shit is for agricultural stuff, I can't remember which one but it wasn't the poverty one.

[sssgtr]

It'd likely depend on the motor. Some ohc engines have the lobes sitting in a bath of oil (volvo 4s come to mind) and will get plenty of oil no matter what, so you probably could get away without running the cam in. Likewise those with roller tipped rockers (some ohc ford 6s for example) .

I do have the same thing, in the KA24E head, the cam receives oil through the rocker bars and the cam caps, which then ends up forming a bath deep enough between the cam cap sections. The lobes end up being continually submerged on each rotation. Previously i had filled these with clean oil last time i installed a new cam in addition to assembly lube.

[260BC]

if you're looking for zinc dithiophosphate (or whatever it's called) from memory 'rotella' is the go - that itself might be a monograde too. It's way too long since I've looked at any of this stuff to remember brands sorry.

Rimula in Oz, Rotella in the US last time I checked. Used to be Rotella in Oz, that may be goinmg back a while though

Good zinc rich 'commercial' oils FTW, had an interesting talk with a Shell tech about this subject.