Installed rebuilt 318. My friend wants me to use lucas breakin additive.

[Schneiderman]

Here's the story: about 6 years ago this engine was rebuilt by a dirtbag. I didn't know he was a dirtbag until last year when I found out how much was wrong with the engine. So, a friend and I removed the engine ourselves, had a trustworthy machine shop sleeve a cylinder and hone all of them, and we installed a new crank, new bearings, a new piston, 3 new rods and all new rings. Put the engine back together and now it is in the car.

We haven't ran it more than a minute yet. My friend wants me to use lucas breakin additive. I think it's a load of crap. What say you?

The cam, lifters, etc. are the same from before- already broken in. Only new items are crank, bearings, 1 new piston, 3 new rods, 1 cylinder sleeve, all cylinders honed and all new rings.

 

[rumblefish360]

IMO, a good idea even though the cam is broken in prior. The rest of the parts could use a little bit of protection. You could also run Brad Penn oil with out the additive since the oil is designed this way.

 

[69B-Cuda]

um, did you have the rotating assembly balanced? Any time you are changing pistons or rods, you should have that done... especially if just one piston or a few rods.... I always use some breakin oil on new engines.... you may have the same cam but new rings on freshly honed cylinders

 

[daredevil]

If you put it together with moly i think you will be ok without it.

 

[rumblefish360]

Agreed. Then again, a little bottle in addition can't hurt. But I agree, with Daredevil.

 

[69B-Cuda]

I always err on the safe side...
cost of engine vs cost of the breakin oil
doesn't hurt to add vs might be OK without.

 

[RustyRatRod]

I say err on the safe side. Leave the Lucas alone.