I just changed my Manual Transmission Fluid from OEM to Royal Purple Syncromax MTF. I'm amazed by the smoothness of the shifts. Best $25 noticeable mod I've done in long time. The old fluid (probably LT1) flushed out pretty clean. I highly recommend the RP Syncromax for those of you with notchy shifting issues, caused by old fluid, and/or cold weather.
I have allways been an OEM fluid consumer, but decided to give the RP products a try, after the feedback on this forum. I changed out my tranny fluid with Syncromax, my diff fluid with Max-Gear 75W-140, but stayed with good old Castrol TWS10W60 engine oil, since I had a batch of 6 liters left from my previous E46/M3.
Next time around, I might try AGIP 10W60. I am a little more conservative with the engine, so I doubt I will try the 10W40 Multigrade RP Engine Oil.
Last edited by dcaron9999; 5th January 2007 at 05:40.
I just changed my Manual Transmission Fluid from OEM to Royal Purple Syncromax MTF. I'm amazed by the smoothness of the shifts. Best $25 noticeable mod I've done in long time. The old fluid (probably LT1) flushed out pretty clean. I highly recommend the RP Syncromax for those of you with notchy shifting issues, caused by old fluid, and/or cold weather.
I have allways been an OEM fluid consumer, but decided to give the RP products a try, after the feedback on this forum. I changed out my tranny fluid with Syncromax, my diff fluid with Max-Gear 75W-140, but stayed with good old Castrol TWS10W60 engine oil, since I had a batch of 6 liters left from my previous E46/M3.
Next time around, I might try AGIP 10W60. I am a little more conservative with the engine, so I doubt I will try the 10W40 Multigrade RP Engine Oil.
I had a similar experience with a dramatic improvement using RP and 33k miles. After 1500 miles with RP, the improvement is pretty much gone (perhaps I am used to it?) I had never changed with OEM fluid...so I can't compare new vs. new.
Brian
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I had a similar experience with a dramatic improvement using RP and 33k miles. After 1500 miles with RP, the improvement is pretty much gone (perhaps I am used to it?) I had never changed with OEM fluid...so I can't compare new vs. new.
I will take that into consideration, and post back later. What did you end up doing - returning to LT1/LT2?
Last edited by dcaron9999; 5th January 2007 at 15:58.
How long did you keep the RP in? I noticed it took about three driving errands, with a large number of gear shifts before noticing a difference.
I had it in for a ct least a month or so - I do remember that after speaking with my BMW tech that he said the OEM was much thicker than the RP and probably a safer route to go.
The other things is that whenever you change ANY transmission fluid depending on how long it's been, you might see a difference just from the new fluid.
I don't want to throw water on your story at all - just my experience.
I had it in for a ct least a month or so - I do remember that after speaking with my BMW tech that he said the OEM was much thicker than the RP and probably a safer route to go. The other things is that whenever you change ANY transmission fluid depending on how long it's been, you might see a difference just from the new fluid. I don't want to throw water on your story at all - just my experience.
No offense taken at all. Good feedback which I will take into account. New fluids would all probably feel different initially. I'll see if the RP Syncromax benefits fade away after a while, and if so, switch back to OEM LT2. It's easy and cheap enough to DIY anyways. Thanks for sharing your experience.
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