Completely rebuilt motor, what break-in oil?

[turbo325i]

Someone mentioned "buy something cheap you're gonna throw it out soon anyway" on bf.c to which I replied "i have way too much invested into this to harm it in any way over a couploe bucks in oil"

we definately see eye to eye on that...

Yea, I get the fact that you are going to throw it away soon, but the break-in is the most critical time for an engine. It either breaks in properly and you have the beginning of a successful motor, or you dont and you start over...

The specified break in oil has a lot of essential "ingredients" that a brand new engine needs. I dont know if you have heard about cams going flat ect ect, but its scary stuff.

It would be an absolute heart breaker to have any kind of mechanical issue with a new motor...

Spend the extra $$ its cheap insurance.

[Mike]

I got that magnetic plug from fleabay. three oe m20 filters with the plug.

[Adrian_Visser]

Definitely spend the money and get a specifically formulated break-in oil, non-detergent is important because a non-detergent oil does not hold all the metal particles created in a new engine in suspension in the oil. Also if there is an ensuing amount of time between when you pour the oil onto the engine and start it it wouldn't be a bad idea to pre-oil the top-end a bit before turning her over.

[turbo325i]

Yea, how would one spin the oil pump to prime one of these motors??? On my 350 chev we just pull the distributor and drill it and get oil pressure that way. Anyone know how on these motors?

[guibo09]

Yea, how would one spin the oil pump to prime one of these motors??? On my 350 chev we just pull the distributor and drill it and get oil pressure that way. Anyone know how on these motors?

you can pull the fuel pump relay and crank the engine with the battery.

[mentaleeill]

Yea, how would one spin the oil pump to prime one of these motors??? On my 350 chev we just pull the distributor and drill it and get oil pressure that way. Anyone know how on these motors?

i put 5 qts in the valvetrain, and then the remainder in the oil filter housing, pulled the fuel pump relay and cranked the engine until my gauge showed pressure.

[M-technik-3]

Straight weight is what is used after doing a rebuild on a Lycoming 0 series engine. It's in there basicly a very shot time to seat the bearings, a sample is then sent to an oil reader.

Go from there. I have been using Valolene VR1 in my S14's for the last 3 years. Running good and the Zinc and the ZDDP content is better than the new Mobil formula 1.

[cleaner32]

There's pretty much only one Rotella T available at the store--15w40, in gallon jugs.

We use this stuff..

[MIKe30]

I ended up picking up some shell rotella 30 weight, as the more i think about it the more and more I'm positive that is what was suggested from vac for initial break in. I remember him mentioning rotella and deisel oil, and that's the only shell rotella deisel oil I could find in any store. So rotalla sae 30 is what it is.

Ran into some speed bumps yesterday, so to be sure and make it all right - going to just try and make sure everything will be ready for first start tomorrow. Initial plan was to start it to see if it works, then redo some things that needed to be done. Now it will be prep it till it's ready, dont start it until it's ready to drive :)

[turbo325i]

you can pull the fuel pump relay and crank the engine with the battery.

i put 5 qts in the valvetrain, and then the remainder in the oil filter housing, pulled the fuel pump relay and cranked the engine until my gauge showed pressure.

I mean to prime the oil pump without spinning the eingine. Guess you cant really do that here. On my 350 I would prime oil throughout the engine without it turning over.

I ended up picking up some shell rotella 30 weight, as the more i think about it the more and more I'm positive that is what was suggested from vac for initial break in.

I was going to say this earlier. You should listen to whoever did your machine work because if you dont use what they reccomend for break in and you have an issue they would be able to discard your complaint because you didnt follow their instructions. Following what they say is a safe way to cover your butt I suppose.

[Adrian_Visser]

M-technik good reference to aircraft engines, are you an A&P by any chance?

[Philo]

When we finished my Metric Mechanic engine, we used Royal purple as a break in. Since then I've always ran Rotella T 15w40, which is a diesel oil.