Breaking in a motor

[JohnZ]

Hate to tell you guys but I believe Rotella T has been changed. Unless you have the older style jug/quart it is now different. I have some of last years oil left but see the paint scheme has changed.  Sam

That's the change from the CI-4 API classification to the new CJ-4 classification, which represents a reduction in the ZDDP concentration for use with the new 2008 diesel engines which have to use catalytic converters and/or particulate traps to meet the new Tier II diesel emission regulations. The ZDDP concentration in the new CJ-4 oil is still substantially higher than it is in the "SM" passenger car spark-ignition oils, and works equally as well as the CI-4 oil in our engines.

[sam]

Thanks John! That makes me happy.  Sam

[bob69]

My 302 is breaking up arround 5000-6000 rpms and has a light knock ( only somethimes ) when under a load, Also sometimes when its ideling I hear a light knock, that stops when I pull the pcv valve. sounds like its in the valve train. Did I wipe a lobe? or what else could it be? I'm scared to drive it. Any help would be great. Thanks BOB

[GaryL]

After break in, what oil do you use?

[JohnZ]

After break in, what oil do you use?

I'd recommend one of the 15W40 CI-4 or CJ-4 diesel oils (Shell Rotella, Mobil Delvac, Chevron Delo, etc.).

[GaryL]

I just ordered a case of Rotella 10-30. 15-40 is a little thick.

[fireZ]

What is the EOS supplement Jerry mentions from GM. Should it be used also after breakin?

[sam]

Does the Rotella 10W30 have the same additives as the 15W40? I thought the additives we need were only in the diesel grades. A lot of guys run 1/2 can of EOS at every oil change on the flat tappet motors. At least that is what they tell me anyhow.  Sam

[1968RSZ28]

What is the EOS supplement Jerry mentions from GM.

EOS = Engine Oil Supplement.  It's available at any GM dealer.

Should it be used also after breakin?

No.  (I asked Jerry the same question.)  

Paul

[JohnZ]

Does the Rotella 10W30 have the same additives as the 15W40? I thought the additives we need were only in the diesel grades. A lot of guys run 1/2 can of EOS at every oil change on the flat tappet motors. At least that is what they tell me anyhow.  Sam

ALL Rotella is diesel oil - it's available in several different weights. EOS is for break-in only; it contains several heavy additives that can clog an oil filter, which is why it's labeled specifically for break-in only.

[olympic69]

Does the Rotella 10W30 have the same additives as the 15W40? I thought the additives we need were only in the diesel grades. A lot of guys run 1/2 can of EOS at every oil change on the flat tappet motors. At least that is what they tell me anyhow.  Sam

The (API?) grades JohnZ listed will appear on the oil jug as he listed them, if the additive package IS the same- JohnZ's quote from above:

"I'd recommend one of the 15W40 CI-4 or CJ-4 diesel oils (Shell Rotella, Mobil Delvac, Chevron Delo, etc.)."

So if you choose another viscosity, look for those listed qualifications which indicate the appropriate additiives are present.

[tom]

I am planning to re-fire my motor for the first time after several years. Will hit the Englishtown swap this weekend and look for an old distributor to prime the motor with. Since the motor has not turned in years should I also be using the rotella?

Tom

[1968RSZ28]

Tom -

I believe CJ has an old distributor for sale:

http://www.camaros.org/forum/index.php?topic=2025.msg12762;boardseen#new

Paul

[tom]

Another foot note, get an old distrbutor shaft and make an oil priming tool out of it.  You can install this shaft in the end of a drill motor and stick it in the engine into the oil pump.  Turn the drill on and you will build oil pressure this way.  Watch your gauge as you are doing this.  The oil pressure will come up slowly.

Jerry

Thanks, but I'm just looking for an oil primer, my dist works (or at least worked) last time fired. I was just wondering if I should use the break in oil after letting the engine sit so long.

Tom

[Gambitt]

You can buy brand new Proform oil primers on ebay for around 10-15 dollars, plus shipping.