A friend tried to get some EOS today and was told it was discontinued. Does anyone know anything about it? Squirrel?
I used it regularly. I called four dealer's that we deal with at the shop i work at and was told the same thing by every one.. I even called the supply places that handle GM stuff with no luck. Luckily i have two extra bottle's left over.. BG also make's an oil suppliment you could use, or Comp cam's has thier's as well. I used the Comp stuff in the latest motor..it's not cheep but neither are our mill's so it's worth the money..
It goes by a different name now. They had to change it so it didn't sound like a oil product to get by the government regulations. No, i cant think what the name is right now. I bought 2 bottles about 3 months ago at the dealers.
I work in a G.M. parts department. The G. M. TRACS computer states that it's a discontinued part number, and that no replacement number exists. I guess it's time to put the bottles I've got on Ebay and retire.
GM pulled it,because of the same EPA bullshit that is fucking up all the motor oils by removing the Zinc and other good shit. Detroit figures out how to make motors stay together for 150,000 miles no problem,and the government has to fuck it up.
Shit!! I've never put an engine together, or installed a new cam without using a can of EOS before firing it off. Surely there is a suitable sub out there somewhere.
This is a real bummer. I've used G.M. E.O.S. for years. Never put in a cam or fired a new engine without it. I''m going to check on the Mopar item and if they've got it I'll probably buy a few extra cans "just in case". Frank
I know that when they switched from EOS (engine oil supplement) to calling it a "break in additive" they changed the part number. It does not supercede the EOS number.
the bottle i have is number 1052367 ....eos assembly lubricant....might be time to hit the local dealer again...... brandon
Yeh my last bottle said "Assembly Lube" on it as well. on the other hand - I like "Crane Cam's Super-Lube BreakIn Concentrate" for the additive to the first firing. I used the EOS as the assembly lube for the bearings/pistons etc. Then used that Crane Paste stuff on the cam and then added the SuperLube Break-In stuff to the oil. Crane Part# 99003 it is about the same price as the EOS Assembly Lube
Ditto. If the cam manufacturor recomends it thats good enough for me. I tend to believe they don't want flat cams about as much as us if not more so they will put whatever is needed in their additives.
GM has discontinued EOS because they say oil additives are not required for GM engines and if thats correct why would they sell such a product. Your only hope of getting EOS, is if a dealer still has some old stock. My local deler didn't have any, I asked if he could check the computer and see if any other dealers in the area had any. Fortunately a dealer about 20 minutes away had 3. Bought them all.
I'm unsure, but 30 years ago I used a form of this material, in putting a cam into a SBC. It was called break-in lube. It contained: molybdenum disulfide - a black, lustrous powder (MoS2) that serves as a dry-film lubricant in certain high-temperature and high-vacuum applications. It is also used in the form of pastes to prevent scoring when assembling press-fit parts, and as an additive to impart residual lubrication properties to oils and greases. Molybdenum disulfide is often called moly or molysulfide.molybdenum disulfide - a black, lustrous powder (MoS2) that serves as a dry-film lubricant in certain high-temperature and high-vacuum applications. It is also used in the form of pastes to prevent scoring when assembling press-fit parts, and as an additive to impart residual lubrication properties to oils and greases. Molybdenum disulfide is often called moly or molysulfide.
My new Chevy 6 has a reground cam by Delta Cams. They are recommending and selling the Crane Super Lube as mentioned above.
Yes, I was going to push the Crane liquid too... I'm guessing that EOS now has no function in the GM system...it was mostly a crutch for flat tappet cam break in, and those are now totally out of their system...they haven't made one for like 20 years. It would be interesting to see what is now recommended when you buy an obsolete type crate motor from them...probably someone like Scoggin Dickey could tell you. Just another good reason to switch to flatheads...they don't eat their own lifters.
I've always used AC Break In Compound (PN 25010647). It's a division of GM,so I figured it'd be pretty good stuff. Since I saw this thread, I ordered another case. I'll agree with Bruce, since GM engines all come with hydraulic roller lifters now and anything over ten years old is obsolete, they're not gonna stock break in lube. The aftermarket cam manufacturers will have to step up and sell the break in lube for their cams, or deal with the flat lobe problem. Looks like Crane has stepped in and sells Zinc additive.
If they don't have a case of it at the warehouse, I guess I'll get the Crane additive (when I've used the case of AC I have on the shelf now). ......or maybe start building more roller cammed engines. Larry T
Well, that does it...last conceivable reason to be sentimental about GM is GONE! Next year, whem GM finishes collapsing and becomes the ashtray stampings division of Hyundai, we won't even notice.
What do they use on the overhead cam motors ? The follower rides directly on the cam,not much different from a lifter. One more reason to switch to roller cams on pushrod motors.
...or their crate engines? Have been told & read several places that MOPAR stuff is identical stuff in identical can with different label.
From my research the STP in the red bottle (for four cylinders) has about half the ZDDP as EOS but does not have the viscocity thickeners that the goop in the blue bottle has. The blue bottle has slightly less ZDDP than the red.
The Jalopy Journal
