I bought a 68 Le Mans over the winter and can't get ahold of the original owner to find out what fluids he was using.It is totally original with 72000 miles on it.Could someone tell me what brand and grade of engine oil I should use,and also atf,it's a power glide,rear end grease,what fuel to use and any othe fluids you can think of.Thanks for any help,just don't want to hurt the old girl with the wrong fluids.
Regular oils do not have either any or enough zinc in it which is required in these old engines. Royal Purple is formulated to be used in these older engines. When I had mine built it was recommended that if I was using regular oil, that a zinc additive be used, which is actually not easy to find. As for the rest, then yes I'd agree with you.
If it is feasible flush the complete system with alcohol and add DOT 5 which I believe is synthetic. Wont be hydroscopic. Resist moisture getting into the brake fluid.
Or just flush the whole system (by adding fresh fluid) and go with DOT 3
Regular oils do not have either any or enough zinc in it which is required in these old engines.
Royal Purple is formulated to be used in these older engines.
When I had mine built it was recommended that if I was using regular oil, that a zinc additive be used, which is actually not easy to find. As for the rest, then yes I'd agree with you.
LOL so says the suppliers of all the "miracle oils" its a lot of Poop
Many of you know that I've performed extensive motor oil "Wear Testing" over that past year. And among the most profound results that came out of my testing, was the fact that the zinc levels made "no difference" on how well a motor oil can provide wear protection.
Of course many people could not accept that, even though they had no hard data to prove otherwise. So, I got pounded a lot for my real world test results, even though real world testing is the Gold Standard for determining how well various oils can protect engines from wear.
Below is a link to a GM report that includes info on zinc in motor oil. And their report says the exact same thing that I found in my testing. So, with my testing and the GM report saying the same thing, maybe now naysayers will believe that my oil test data was in fact valid all along.
Between the two, this proves you cannot put any value in a motor oil list of zinc levels. And you cannot believe cam and lifter Companies who tell you that you need a certain zinc level.
One of our techs uses it every other oil change. His carbureted 350 went over 700,000 km and when it did blow, it wasn't an oiling related failure.
Early 80's a guy pulled into the Pontiac dealership I worked at. It sounded like he had a lifter or valve stuck. The same tech (I still work with him today) told him to dump in a can of EOS. He did, ran it at fast idle for about 2-3 minutes and it all quieted right back down, as if there had never been an issue.
I'm sold on the stuff, especially now because apparently the Canadian EOS has zinc and the US doesn't.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Should I be using some kind of fuel additive due to the lack of lead or is it not necessary?
An octane booster wouldn't hurt.
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Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
GM on zinc in motor oil