515PHOTO Posted May 25, 2012 Share Posted May 25, 2012 Hi all, I'm doing my first fluid change on my new to me 01 RT. I have the hypoid gear oil (GL-5) ready to go. The oil I drained out of the gear box and final drive was red. So, my question. Is there red GL-5 gear oil? Or was dextron trans fluid put in? If the consensus is this must be A/T fluid is it compatable with good old fashioned GL-5 80/90 gear oil? Service records show a consistant use of BMW dealers for service so I am guessing the BMW tranny oil is red????? Thanks Link to comment
Paul Mihalka Posted May 25, 2012 Share Posted May 25, 2012 There is Red Line gear oil, and many swear by it. http://www.redlineoil.com/Products.aspx?pcid=7 Link to comment
BMW_Ken Posted May 25, 2012 Share Posted May 25, 2012 Some of the BMW branded synthetic gear oil is red also. Link to comment
nw1150 Posted May 25, 2012 Share Posted May 25, 2012 You might try Redline Heavy Shockproof (it is red in color and a 75w240 synthetic). I had been running 75w90 gear oil and just switched to it and it sure seemed to shift a lot smoother and slicker. For the rearend I had tried a synthetic but kept getting a little seaping from the input seal so switch back to regular 90w gear oil and it has stayed dry since. Link to comment
515PHOTO Posted May 25, 2012 Author Share Posted May 25, 2012 Well, I put the dino 80/90 in and will assume the best. I'll look into that redline next time. Thanks all Link to comment
David13 Posted May 25, 2012 Share Posted May 25, 2012 When I changed mine it was red also. I don't know what they had put in there. dc Link to comment
rustyfingerz Posted May 25, 2012 Share Posted May 25, 2012 +1 on the Redline Shockproof,I use it in my trans and final drive. I also use it in the trans in my fatboy. Lucky for me a dealer is not to far. Its not readily available. Link to comment
BrianM Posted May 26, 2012 Share Posted May 26, 2012 Redline gear oil (not the shockproof) is not red. Link to comment
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