# Royal Purple High Performance Marine Gear Oil **URL:** \ **Category:** SON240sx Automotive\ **Created:** [July 31, 2014, 3:25pm UTC](https://forums.speedlife.net/t/royal-purple-high-performance-marine-gear-oil/270182 "2014-07-31T15:25:31Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [July 31, 2014, 3:25pm UTC](https://forums.speedlife.net/t/royal-purple-high-performance-marine-gear-oil/270182/1 "2014-07-31T15:25:31Z")
Hey guys I was wondering if any of you run Royal Purple Marine gear oil in your transmissions? I bought some 80w90 but im hesitant to pour it in lol. I read that its very good for impact (when a boat engine engages into gear). I dont really see a reason not to run it. I thought I would ask on here first… **[Royal Purple High Performance Marine Gear Oil - Free Shipping on All Orders @ JEGS](http://www.jegs.com/p/Royal-Purple/Royal-Purple-High-Performance-Marine-Gear-Oil/1918579/10002/-1)** Jake ---
**Author:** ![G-E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/g-e/32/5546_2.png) [@G-E](https://forums.speedlife.net/u/G-E)\ **Post date:** [July 31, 2014, 7:12pm UTC](https://forums.speedlife.net/t/royal-purple-high-performance-marine-gear-oil/270182/2 "2014-07-31T19:12:39Z")
Why don’t you read the sae/apl ratings and look them up, maybe it’s perfectly capable of operating in a car… ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [August 6, 2014, 1:46pm UTC](https://forums.speedlife.net/t/royal-purple-high-performance-marine-gear-oil/270182/3 "2014-08-06T13:46:18Z")
It turns out the oil is not good for brass… But besides that, its great… I wont be running it for too long tho