Break in oil on 2nd change?
 

Hello Chevy truck forum members!

Edit: The project is a 1971 GMC 3/4 long box big window., the motor is a 87-95 chevy 350

After a few months of viewing this forum as a guest (and being helped a lot by the posts, thanks!) I recently joined and I have a first time engine building question.

The engine in question is a rebuilt 350 with roller every thing, so I'm not worried about cam break in, and with all the conflicting engine break-in info I've come up with a plan for break-in that should work for me.

I plan on using Edelbrock engine break in oil for the first step of break in as almost all the after market parts are edelbrock and it's a company I trust.

The question, After the first oil change I plan after 30-40 miles of break-in should I refill with the same break-in oil for the 2nd change? or go to high quality old school oil?

I'm thinking about using the Edelbrock break in oil for the 2nd fill. I guess my point is after the tender first break-in would a little less protection help or hinder the smoothing of machined parts?

any advice would be of great value to me

Thanks. Dean

Edit: I think I posted this on the wrong section. Sorry, I'm new to forums. Can this post be moved to the correct section of the forum or deleted?

Re: Break in oil on 2nd change?
 

Ttt

Re: Break in oil on 2nd change?
 

If its a roller cam, you really don't need to break it in, however, imo it never hurts to pamper your investment.

Re: Break in oil on 2nd change?
 

I have a 69 C20 converted to a C10 with a '92 4 bolt main good Wrench 350 that i just rebuilt with a complete Crower roller valve train, the council I got from the guys who are a lot smarter than me on this stuff say that break in oil for the first 100 miles then oil of my choice from then on Install a magnetic oil plug just in case. I am going to run Brad Penn oil in it for the life of the engine, Pennsylvania crude has long been tauted as being above average and is recommended by Crower. I like the fact that it is made right here in the USA and it is formulated for high rev engines. Not that I am going to be racing it that much but I like the fact that it is not going to be breaking down from any driving I will be doing.

Re: Break in oil on 2nd change?
 

Ok. That's close enough to the answer I was looking for. Break-in oil for 40ish miles and again for another 60ish. I don't mind changing the oil often because $60 is better than metal in the oil, but if it's over-kill I won't do it.
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Re: Break in oil on 2nd change?
 

With a roller cam you still need to seat the rings. We used to tell people to change the break-in oil at 300-500 miles, which was mainly for allowing the additives to assist in seating the rings. Even with flat tappet cams the period for that is minimal, 20-30 minutes.

After the 300 mile period the break-in oil has done it's work and you are ready for regular oil.

You might call Edelbrock tech and ask their advice. They will know what the latest advice is.

Re: Break in oil on 2nd change?
 

Exactly!! Proper break in of the rings is essential and an often over-looked step.

Re: Break in oil on 2nd change?
 

Thank you all for your input!

The plan will be to use break-in oil for 500 miles regardless of how often I decide to change the oil. Then switch to a synthetic blend for another 500 then full synthetic for the rest of it's life.

I hope to unload photos of my project soon. I missed a lot of steps in it's progression though, and I need to find out how to upload photos on a forum.

Thanks again for solving my problem, i'd say case closed. Until some thing else creeps up!

Re: Break in oil on 2nd change?
 

Re: Break in oil on 2nd change?
 

Take a picture.
upload picture(s) to a host -photobucket, imageshack, etc
when you go to share, each picture will have a IMG tag for you to share
post the tag here in your post [ IMG] Reliantspictures com/engine [/IMG]

and your picture appears ;)

http://i47.photobucket.com/albums/f1.../305/305_1.jpg

Re: Break in oil on 2nd change?
 

Crower does not recomend any of the synthetic brands, only the real stuff so that is what I am going with.

Re: Break in oil on 2nd change?
 

My machine shop swears by rotella t 15-40