Thread: Engine Break-In Oil/Procedures

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I didn't notice any stickies that outline this so I thought I'd ask here.

I have a rebuilt 283 (stock w/mild cam) that has only a small bit of idle time on it.

What type of oil should I use? For how long and when to change?

How should I run the engine? Idle......between certain speeds?

Thanks in advance

Thanks, checking those now.....

Well I looked through those and I guess the best advice I saw was any cheap 30wt oil and add a zinc additive.

Nothing was said about a non-detergent oil?

What's the speculation about non-detergent oil and why do some recommend it?

i use rotella oil in new motors. or you really need an additive on the first fire up. the first 3 min of life has a lot to do with how long a motor lives. i have witnessed a new cam failing in less than 1k miles with only penzoil 10w30.

Originally Posted by PLANETGETLOW

Nothing was said about a non-detergent oil?

What's the speculation about non-detergent oil and why do some recommend it?

No speculation about it..........there's is absolutely no factual basis for using it in a gasoline engine. Great for air compressors, not motor vehicles. The term "non-detergent" is somewhat of a misnomer. So called "non-detergent" oils also don't contain any other additives (except possibly anti-rust or anti-oxidation), most critical being the anti-wear additive to protect the cam shaft.

Hopefully your comment about "small bit of idle time" is not completely accurate. If you didn't do a camshaft breakin you might be in for a surprise.

Originally Posted by PLANETGETLOW

I didn't notice any stickies that outline this so I thought I'd ask here.

I have a rebuilt 283 (stock w/mild cam) that has only a small bit of idle time on it.

What type of oil should I use? For how long and when to change?

How should I run the engine? Idle......between certain speeds?

Thanks in advance

I would run either GM EOS or Crane cam break in additive.

Use Crane 99003-1. GM has discontinued their EOS.

Originally Posted by techinspector1

Use Crane 99003-1. GM has discontinued their EOS.

Richard,are you sure about the EOS??
I was told it was just re-packaged.

Repackaged number; 88862586.....Blackstone has the total numbers for add packs.

Originally Posted by erik erikson

I would run either GM EOS or Crane cam break in additive.

Dumb question time.... Do the hydraulic roller cam and lifters require anything special, or can you just treat them like a mechanical roller setup?????

Lubricants | Vehicle Care Products | Parts Information | ACDelco

Select EOS on the drop down menu.

Originally Posted by Dave Severson

Dumb question time.... Do the hydraulic roller cam and lifters require anything special, or can you just treat them like a mechanical roller setup?????

Dave,you can treat them just like a mech. roller cam.

Originally Posted by erik erikson

Dave,you can treat them just like a mech. roller cam.

Thanks Erik, I keep looking at the hydraulic rollers....... Must be the geezer in me, but I'm still reluctant to run anything in my valve train that has hydraulic in the part name!!!!!!


Oh yeah, one of the locals wiped out his brand new Crane cam and lifters on Sunday, said it took him awhile to get the timing and idle mixture set......ran the brand new cam and lifters at 800rpm for about 15 minutes while he was messing around..... Wiped out two lobes.... Surprise, Surprise, huh??? Of course he was at the parts store first thing Monday morning screaming at Tommy about honoring the "warranty". He lost....

Originally Posted by DennyW

Bob, that's not the same stuff. Here is what it says:

Part 10-106
12371532
E.O.S. Assembly Lubricant (1 pint)

Is specially formulated as an engine assembly lubricant
Provides protection against run-in wear and piston scuffing
Is not recommended for use as an additive for engine oil

Corporate CYA

Originally Posted by Dave Severson

Thanks Erik, I keep looking at the hydraulic rollers....... Must be the geezer in me, but I'm still reluctant to run anything in my valve train that has hydraulic in the part name!!!!!!

There are a lot of varibiles but I.M.O. 6,500 rpm's about max. rpm.
After 6,500 I would go mech. roller.
There have been some Ford guys with beehive springs, hollow stem valves etc. hitting 7,000 rpms but it would make me nervous.