Best oil for engine Break-in

forestguy · Mar 15, 2010

I am getting close to attempting to start my new EFI motor and wanted to know the best oil for the break-in period. Also I was told run for 1000 miles and change, then another 1000, change and then every 3000. Does this sound correct?

Also, what oil for the new AOD?

Thanks,

blubuckaroo · Mar 15, 2010

Roller or flat tappet cam?

forestguy · Mar 15, 2010

I believe it is a roller cam but not roller rockers. It is a stock 88 Lincoln Town Car motor, but with mass air now.

blubuckaroo · Mar 15, 2010

If you have a roller cam, you should be able to use just about any dinosaur oil. I'd use SAE-30 or 10W-40.

phred · Mar 15, 2010

Just finished a build on a 351m and had it dynoed. We used regular dino juice and a pint of compcams engine break-in additive. Its got all the zinc and moly lubes. Turns the engine oil black, but the builder really likes that stuff and we flogged it pretty hard on the dyno to get it set up and after about 2 hours of hard runs we cut the oil filter apart and it was clean as a whistle.

Madgyver · Mar 15, 2010

30W or equivalent

byson1 · Mar 16, 2010

With roller cams it's not near as critical as flat tappers

stock1970 · Mar 16, 2010

not to hijack the thread but it makes me wonder what the big auto companies do to break in there vehicles.. or do they just fill it up and drive it off the line and to the lot.

John Marinan · Mar 16, 2010

I just put in a new cam. I used ARP assembly lube. The machine shop that built the heads said to use Rotella non synthetic. I would change it after a short break in period.

RajinCajun · Mar 16, 2010

John Marinan said:
I just put in a new cam. I used ARP assembly lube. The machine shop that built the heads said to use Rotella non synthetic. I would change it after a short break in period.

That is the key, "non synthetic" you want the rings etc to wear a little and seal, the synthetic lubes do not allow this. I use straight 30W nondetergent for break in's and change after cam breakn in(flat tapped) or after a few warm up cycles in the shop to check for leaks on rollers.

For the AOD, good luck, I haven't messed with autos much, but I would bet the same thing, use a good quality "dinosaur" oil for break in.

Bronco_69 · Mar 16, 2010

roller cam? if so change it after about 20 miles and then at normal intervals.

Best oil for engine Break-in

forestguy

Sr. Member

blubuckaroo

Grease Monkey

forestguy

Sr. Member

blubuckaroo

Grease Monkey

phred

Bronco Guru

Madgyver

Bronco Madman

byson1

Sr. Member

stock1970

Bronco Guru

John Marinan

Sr. Member

RajinCajun

Bronco Guru

Bronco_69

Bronco Guru

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