Forcedvert

I have read the break in procedure for my new motor, never really thought about oil before. So I have a forged motor with cat. conv. what oil are you guys using that has the phosphorous and zinc required and not too much for the cats. After the initial break in of 5000 miles?

Thanks in advance
Adam

robert miller

For the money most run rotella 15w40. I have been using AMSOIL 20w50

a/c man

Valvoline vr1 racing

LedfootLarry

Is that a synthetic version or dino?
I have been using whatever synthetic I can buy on sale, and adding
Lucas zinc to it. But I am considering Joe Gibbs, it has pretty good reviews.

realcanuk

Running Joe Gibbs (Driven) LS30 because that's what the builder recommended.

a/c man

Just regular oil has more zinc than most I also like the shell diesel oil 15-40 good for the price.

PEETYZ

I'm running the Rotella TR6 Synthetic 5w-40 but check with the engine builder. Most recommend thicker non synthetic. Rotella 15W-40 is great for the price.

a/c man

I agree this oil has some good stuff I hear

Forcedvert

Are you running cats? Are the anti wear additives really a problem for the cats? To me the motor wear is more important but wondering if the ZDDP is really a problem. A lot of the information I read is a little contradictory as far as what is best for motor and car. Cost is not a problem, looking at what I have spent for motor. Gotta pay to play!

a/c man

No cats here

LedfootLarry

Most FI cars run a richer tune, which is hard on cats. so are the high zinc formula oils....no cats

blown81bu

I run the rotella 5w40 synthetic from walmart..mobil 1 sux broke down quick on me

rotella at walmart

pewter99

running Castrol 10w40 in mine

breecher_7

Rotella 15-40 or Amsoil 20-50

robert miller

20-50 in the summer and 15-40 in the winter. That is for the guys that drive the car in cold weather..

Forcedvert

Anyone running these oils mentioned with cats for many miles?

Forcedvert

Cold weather not a problem in Florida, plus car in warm garage when not in use :-).

Forcedvert

Thanks for all the input you guys! I just want to ask again if anybody? has experienced a early failure of new high flow cats using any of the specialty oils with the higher ZDDP amounts or is this all cya stuff from the mfg?

Thanks again

a/c man

my LG cats only lasted a summer they blew apart. I don't have any now but I think it's because of my hp level and spraying methanol

Forcedvert

We'll see I guess I have same cats but less HP! Was your car much louder without cats do you get bad odor?