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Topic: ZDDP

in Forum: C4 Engines

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ZDDP

Posted: 8/5/14 9:49am Message 1 of 2
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hafferf
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Columbia City, OR - USA
Joined: 6/30/2013
Posts: 23
Vette(s): 1988 35th Anniversary Edition Corvette Coupe
Howdy Folks!!...;
    I was over on the AK-47 forum today, and in "General Discussion", they were talking about ZDDP (Zink in oil). They mentioned that ZDDP in motor oil (or lack of) can damage engines with "Flat Valve Tappets". They mentioned that in in 2004 all engines had roller lifters/roller cam conversion and the lack of Zink in the oil didn't cause damage to the cam lobes. Now my Vette is an "88" 35th anniversary edition... does it have flat valve tappets or the other type??....

Thanks
Fast Freddie


 
USMC 64-67 RVN I Corps "66"
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote."
Attributed to , Benjamin Franklin, 1759
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Re: ZDDP

Posted: 8/5/14 8:52pm Message 2 of 2
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Red
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Hemet, CA - USA
Joined: 3/24/2013
Posts: 22
Vette(s): 1986 convertible, bright red, white top, red interior

1986 was the last year that Corvette used the flat tappets. The big change for the 1987 Corvette was the change to the new type of tappet. I have an 86 so I need to use the oil with ZDDP. 




in Forum: C4 Engines


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