# Engine Oil - ZDDP

**URL:** <https://forums.speedlife.net/t/engine-oil-zddp/45510>\
**Category:** NYSpeed Automotive\
**Created:** [March 23, 2008, 7:27pm UTC](https://forums.speedlife.net/t/engine-oil-zddp/45510 "2008-03-23T19:27:38Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Matt\_Danger](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/matt_danger/32/4981_2.png) [@Matt\_Danger](https://forums.speedlife.net/u/Matt_Danger)\
**Post date:** [March 24, 2008, 6:38am UTC](https://forums.speedlife.net/t/engine-oil-zddp/45510/6 "2008-03-24T06:38:32Z")

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When I had the Trans Am I used Rotella, but they have since dropped the zinc as Pauly said. A lot of diesel or off-road only oils still have the zinc, check the labels when you buy.

I read that you can also add a bottle of GM EOS to supplement the zinc. It’s like $10 a bottle.

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