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O
Former Member
Send PMColumbia City, Oregon, OR - USA
Joined: 2/6/2004
Posts: 72
Vette(s): "86", "89", and finally an "81" Red/Tan. I call her "Sweet Pea".
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
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
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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.
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in Forum: C4 Engines, Driveline and Handling
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