hi all i am hoping someone can help me with a small problem,on my 272 y block rocker shafts i need to know exactly where to point the oil discharge nozzles at the end of the shafts.pointing down the push rod hole or elsewhere cheers

Well, here it is as it happened -

Some years ago, the EPA banned zinc/ash formulated engine oil as it damaged the newer line of convertors. For a while there was no suitable oil available until someone realized SHELL ROTELLA could be used as it had the zinc and was rated for gasoline and/or diesel.

Then SHELL changed the ROTELLA formula and removed the zinc. This was for newer diesel (roller and particulate traps). The old product was still available in 5 GAL containers for older fleet use. Not many caught onto this and I tired of the constant food fights.

This is where the old wives tales still come into play. There are now many formulated oils for flat tappet usage.

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IMO ...

There are many refiners that have released the modified oil for use in older flat tappet engines. TED EATON prefers VALVOLINE. With all the modifications he does and they live, consider that route.

BRAD PENN also  makes a good product, again IMO.

What you have to worry about now is viscosity. Oil does three things mainly, lubricates, cools and cleans/holds suspended particulates. And you have to use a high quality filter, not a WALLY WORLD off-shore version.

EDIT -

Maybe his page will help as I am not a good teacher- https://www.valvoline.com/about-us/faq/racing-oil-faq

You have to be aware of what you are buying as a true racing oil is meant for a competition engine only, not street, as there may be far less detergent/dispersant packages as race oil may be changed on a much more frequent basis. You need an oil to make the engine live on the street.

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Please go to Florida_Phil's latest post under 1970 Boss 302 thread.


64F100 57FAIRLANE500