Oil recomendations, Chevy 454 in pulling truck...

[Farmall]

A good friend runs the pulling circuit and this past year I sponsered him with Amsoil. He had run Valvoline 20-50?? for years before in this application. With the issues dealing with ZDDP I stayed with the 10W30/30 Diesel oil and had excellent results. He was very impressed with what he thought was some additional power gains...don't know how or why yet?? (any good ideas

)

So now moving to the 07' season the engine has received it's winter freshening. Now with the concerns of ZDDP being eliminated what do the guys here think would be a good course to chart. Stay with the 10W30/30 or go up to the 20W50 racing oil. The cam is obviously the greatest concern. I realize there is more oil than Amsoil but I don't know any recomendations outside that brand.

Thanks for any help

 

[Gene K]

Has Amsoil cut the ZDDP on the ACD?

Another option would be Redline 10w30.

 

[Gene K]

Correction: I meant to say Redline Racing 30 Wt. Like Amsoil it also qualifies as a 10w30. However it is only intended for racing use and doesn't have the required detergents for extended use.

 

[KW]

If the ACD 10W30/30 worked in the last set up is should do well with it this season. I would lean toward the 20W50 racing oil for a 454 tractor pull set up myself.

 

[Steve S]

Gemeral Motors makes a product called E.O.S. engine oil supplement . Figure out a ratio that is not too much and add to oil for the zinc of your dreams. There is a virgin anaylsis look it up.

 

[Steve S]

GM EOS additive rugerman1 192 26 03/25/05 07:21 AM

 

[Steve S]

That was supposed to be a link.The
post is on the 3rd page of he virgin oil anaylsis section.

 

[Ray H]

Not an answer, though something that's puzzled me for some time... Isn't it somewhat odd that GM is still relying on a ZDDP-rich assembly lube to protect new cams during run-in while Honda has been using a moly-rich assembly lube for years for the same purpose? Why the discrepency in early camshaft run-in protection methodology - does anyone seriously believe Honda knows less about long-term gasoline engine life than does GM?

 

[Drew99GT]

ZDDP isn't eliminated, it's just that Phosphorus has an 800 ppm cap, not THAT much less than GF-3 oils.

And ACD is not subject to that limit because it's not GF-4. If that's the oil he was using, with good results, I say carry on!

 

[427Z06]

Quote:

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Not an answer, though something that's puzzled me for some time... Isn't it somewhat odd that GM is still relying on a ZDDP-rich assembly lube to protect new cams during run-in while Honda has been using a moly-rich assembly lube for years for the same purpose? Why the discrepency in early camshaft run-in protection methodology - does anyone seriously believe Honda knows less about long-term gasoline engine life than does GM?

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GM still produces Gen I flat-tappet pushrod pig-iron crate engines. This is what the GM EOS is intended for.

Virtually all Honda engines are OHC, use rollerized valvetrains, crank triggered electronic ignition, g-rotor oil pumps. Their affinity for moly-rich assembly lube is for different purposes.

 

[gedcruise]

How about a nice HDEO, like Rotella or Delvac?

 

[Drew99GT]

Ahhhhhhh, that's what Amsoil ACD is.

 

[Steve S]

That is why I suggested the E.O.S. to spike the Amsoil since it works well .

 

[Pablo]

Let's get the facts out here.

ACD additive pack has NOT been reduced. ZDDP has not been "eliminated". If it worked before, it will work fine.

Yes the 15W-20 or 20W-50 might be worth a look if you want a bit higher viscosity.

You could add E.O.S if you like to any of these oils, but it's not really required.

 

[Steve S]

I am sure the Amsoil has a good amount zinc ,Most likely the engine has killer valve springs so it could use extra zinc .E.O.S.has been around forever the first time I learned about E.O.S.is in 1969.