Zinc added to oil
#1
Racer
Thread Starter
Zinc added to oil
I have a pending appointment at a "vette specialty" shop in NJ. They are telling me I should get an oil change and that they need to add a zinc additive for my cam? BS or true? I've seen a lot on oil here and nothing on zinc. It jacks up the price of the oil change by almost double. My local mechanic says its nonsense.
Thanks
Frank
Thanks
Frank
#2
Melting Slicks
If your engine has a OEM valvetrain you need only a CK-4 rated oil. If the cam & springs are aftermarket I would consult the cam manufacturer. for what they recommend..
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fjd (04-09-2019)
#3
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I have a pending appointment at a "vette specialty" shop in NJ. They are telling me I should get an oil change and that they need to add a zinc additive for my cam? BS or true? I've seen a lot on oil here and nothing on zinc. It jacks up the price of the oil change by almost double. My local mechanic says its nonsense.
Thanks
Frank
Thanks
Frank
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fjd (04-09-2019)
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fjd (04-09-2019)
#5
Drifting
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I've heard both ways, buy I doubt adding zinc can hurt, so why not add it and have your bases covered. You can buy 4oz from most of the vendor for $9.00, which makes it cheap insurance.
BH
BH
#6
Racer
Thread Starter
Agreed! Story of my vette life, better safe then sorry, whats a few bux more. LOL
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Movie Muscle (04-11-2019)
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#8
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Too much ZDDP is a bad thing. You want it at about 1200-1500 ppm. I use diesel spec oil in my old flat tappet cars and have for years. No issues, thousands of miles.
#9
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Buy the right oil and you won’t need anything else in your oil but oil see post two
#10
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#11
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#12
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Buy Diesel oil, add nothing to it, and put the whole matter out of your mind.
Jim
Last edited by jim lockwood; 04-09-2019 at 03:48 PM.
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#13
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Butch
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#15
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The Rotella and similar diesel spec oils already have the higher ZDDP. I run 10/30 or 15/40 in my old cars. It's excellent stuff....there are a lot of 500,000 mile big rigs running on it. And it works just fine with gasoline engines as well, despite what naysayers come up with.
#16
Burning Brakes
For what it is worth, I have always run Brad Penn oil in the 455 Buick's we did over the years with zero issues. I bought a case to use in the '66 327/300 and will be putting it in next week (not the whole case, for those who are terminally literal...) as the car gets on the road. One of the first things I try to do, along with all other fluid changes that are needed. CHEAP insurance in my opinion.
Cheers,
Richard
Cheers,
Richard
Last edited by richopp; 04-09-2019 at 05:33 PM.
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Mr. Wizzard (04-12-2019)
#17
Le Mans Master
And again.....
Google it. Crack open a cold on and READ. I can tell you from experience having lost 3 engines to flat cams. IF you have a flat tappet cam YES you need it. I used Rotella on one of mine and lost it to. After research I found they had reduced the PPM of zinc. NOW having said all that it is not just zinc but a balanced add pack. Phosphate figures in also as well as more. Call comp cams tech line and talk to them. Added spring pressure for higher lift cams affects it also so what may be ok for one engine is not ok for all. I now use Lucas Hot Rod oil and add some zinc with Lucas additive. Some say more is not better again it is a blend. NO one size fits all. GOOD LUCK. Just my humble opinion having been there 3 times now AND YES proper cam break in with new cam IS critical.
Last edited by Vette5311; 04-09-2019 at 05:33 PM.
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fjd (04-09-2019)
#18
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Cheap insurance? Insurance against what? What is your limit on your "insurance" premiums?
Or is this another "piece of mind" deal?
Or is this another "piece of mind" deal?
#19
Burning Brakes
I see cars all the time with 50+ year-old spark plug wires on them (!), as well as cars that have been sitting in a collection that does not have a full-time service person to drive and maintain them. To me, a few dollars of fresh fluids is an inexpensive way to maintain these systems before something fails due to a fluid issue.
If you want to call that "peace of mind" then have at it. You are certainly 100% correct in my case, but not the main reason for the system fluid maintenance I perform.
Cheers,
Richard
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The whale oil is a old time GM tech slang term for the posi additive
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fjd (04-09-2019)