Well, I have the stock fluid (what ever weight it might be) from new and last winter when it got real cold, it was like driving with Oat meal in the gear box, I could feel it slow the car big time until it warmed up some!
The new fluid from Hyundai is synthetic it works much better then the old stuff. They had issues with the none synthetic stuff in cold weather. I wouldn't recomend ATF in your manual. If found in there and its still under warranty then it would void the warranty..
Ya lol the non synthietic stuff (in really cold weather) keeps the gear in! like, ovrenight I park and leave the car in gear, then in the morning, I start up the car, take it out of gear, and release the clutch, and the car briefly moves in whatever direction the gear was put (I use 1, 2, or R)
I left it in 4 once and did the same thing and the car actually stalled!
dont mean to hijack your post Red...but on my X3, do I remove the heat shield to get at the bolt to fill my tranny back up after draining the fluid? Webtech is very little help in determining how to do this...again, Red02, sorry to hijack,.
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