Didnt find anything in search.. I just got this car running, and its been parkd for 6 months and who knows when this trans fluid has been changd. Trans feels really notchy,2nd gear is hard to get in too but no grind.. As a toyota tech, we get alot of free stuff, esp Bg stuff.. Snycroshift 2 did wonders for dsm's but what about for the r154 ? i have 4 quarts. Thanks
BG syncroShift 2 ??
- Thread starter m3rk
- Start date
First of all, I am highly suspicious of any lubricant company that does not publish data sheets for their products and says a gear oil is good for all transmissions...there is very little info on BG syncroshift. It appears that Syncroshift is equivalent to GM Syncromesh...read this:
http://www.supramania.com/forums/showthread.php?t=47457
RP Syncromax is the same type fluid...read this:
http://www.supramania.com/forums/showthread.php?t=44485
Bottom line: Both Syncromesh and Syncromax are too thin...I highly suspect BG Syncroshift is the same. I would not use it.
http://www.supramania.com/forums/showthread.php?t=47457
RP Syncromax is the same type fluid...read this:
http://www.supramania.com/forums/showthread.php?t=44485
Bottom line: Both Syncromesh and Syncromax are too thin...I highly suspect BG Syncroshift is the same. I would not use it.
^^ i put RP Synchromax in my car last year and didn't even run it for a week. It was nice and smooth at startup, but after about 10 mins of driving the shifting would get really notchy and was a PITA to drive. Drained the fluid and found lots of brass shavings in my fluid. :cry:
Replaced with RP 75W140 and feels great. It still gets a little notchy after about an hour or so, but i think it's mostly because of bad synchros (164k miles on it)
Replaced with RP 75W140 and feels great. It still gets a little notchy after about an hour or so, but i think it's mostly because of bad synchros (164k miles on it)
BG makes good products. Although I don't know about all of them. Their penetrating oil is fantastic.
StiCk3;1305027 said:
RP gear oils have a friction modifier in their formulation. You DO NOT want to run this oil in a R154 or W58 tranny. Your buddy running "big power" doesn't know a lot about gear oil.
Take the time to read the 2nd thread link I posted above.
If you want your tranny to last, dump that oil. A thicker oil will not help either. MT90 is what you want to use.
Mt-90 is the way to go. I work for toyota as well. Lots of the bg stuff is great but haven't tryed the syncroshift. For the price get the redline stuff. BTW R-154 won't shift like one of those exploding DSM trannys. Its build to last and shifts like a rwd race tranny should so i wouldn't worry about it being a little notchy
jdub;1305048 said:
http://www.clublexus.com/forums/performance-and-maintenance/367231-royal-purple-synchromax.html
This is what i based my decision to swap to 75W-140. Works just fine.
StiCk3;1305640 said:
The only post based on fact in that thread was #11...It's funny you went to the TRSM for the spec on the differential and ignored it for the tranny.
You still have not read that thread above, have you? That the friction modifiers in RP can (and will) damage the syncro's over time. That the friction modifiers make the oil too "slick"...the R154 needs friction for the syncro's to work properly. Tell me...how do you know it "works just fine"?
What about this?
Royal Purple said:
You can use the "my buddy told me" technique of choosing gear oil if you wish. In fact, you can drive your car off a cliff...it is your car.
But, for anyone else that reads this: RP gear oil is a very poor choice for the R154 or W58 tranny. It's fine for the differential. Any gear oil that contains friction modifiers meant for a differential is not for use in our trannys...period. Oil that is too thick will simply rob power from the engine.
Not to mention the thicker oil will not flow through the transmission properly.
BG SynchroShift is a replacement for GM Synchromesh (as mentioned) - I ran it great in my Tremec T5.
That transmission can also use automatic transmission fluid, as that is what it is designed for.
BG SynchroShift will feel amazing in your r154, as your r154 slowly eats itself to death.
BG SynchroShift is a replacement for GM Synchromesh (as mentioned) - I ran it great in my Tremec T5.
That transmission can also use automatic transmission fluid, as that is what it is designed for.
BG SynchroShift will feel amazing in your r154, as your r154 slowly eats itself to death.
jdub;1305685 said:
I have TRSMs for my car and a bunch of other cars and i know full well that the W58 trannies are recommended for 75W-90 or 80W90 gear oil.
I know it works just fine because i use it in my tranny and i have been for the past 10k miles with a noticable difference in shifting smoothness. Also
What about this?
Also in post #5 in your thread, you mention that the friction modifiers could in fact free up the synchros. You also mention that it's also a sign that the tranny is going out. Mine has been doing fine for 10k since i put in the RP, including lots of hard shifting and drag passes. It could still be on it's last legs sure, but it hasn't happened yet. I'll let you know when it does though.
I have and so far it hasn't proven a problem. Don't get me wrong, im not trying to piss you off or anything, im simply explaining my experiences and that many others have tried it without problems.
How about taking it from someone that's tried them all (like me).
I had a second gear grind that Royal Purple (tried both syncromax and maxgear) made a little better at first, but once I got some miles on the oil and especially after the tranny warmed up, it got MUCH worse to the point second gear would have to be rev matched to get it to go in.
Put MT-90 in it and it's been in for over a year now. Second gear DOES NOT GRIND AT ALL. Tranny never gives me issues.
It's your car, but if you know how a transmission works you'd know why adding friction modifier is going to hinder the function of the syncros.
I had a second gear grind that Royal Purple (tried both syncromax and maxgear) made a little better at first, but once I got some miles on the oil and especially after the tranny warmed up, it got MUCH worse to the point second gear would have to be rev matched to get it to go in.
Put MT-90 in it and it's been in for over a year now. Second gear DOES NOT GRIND AT ALL. Tranny never gives me issues.
It's your car, but if you know how a transmission works you'd know why adding friction modifier is going to hinder the function of the syncros.
^^^ And, there's been several others here that had the exact same experience with RP gear oil.
StiCk3 - believe what you want, but your earlier posts made it sound like RP 75W-140 was the way to go...it's not. That includes any gear oil with the friction modifier already in it.
StiCk3 - believe what you want, but your earlier posts made it sound like RP 75W-140 was the way to go...it's not. That includes any gear oil with the friction modifier already in it.
