Transmission oil what do you guys run for smoothness...?
Transmission oil what do you guys run for smoothness...?
about to change my tranny oil. i used to use royal purple which is much better then the regular non syn 75w90 i have in the tranny now. i have noticed it very notchy and tough to go through the gears, cant really get a quick shift in. i might go back to the royal purple but i was wondering what you guys are running out there to shift the car at 8k+ rpms and get in quick. ive searched but most info was on the 1st and 2nd gens.
Great thread really narrowed it down now neo or amsoil. I mainly want fast shift up in the rpms given as long as these are smooth that should help. What are the drag guys using?
I purchased my R1 in June 1992 and ran Redline in both the tans and diff for over 90,000 miles.
All my trans synchros were still working perfectly when I pulled and replaced the trans with one with a .806 5th.
The only problem the original trans had was with the input shaft bearing getting noisy.
Sold it to a local running a half bridge single.
He put it in as was and it is still running good but still with that input shaft whirl.
Maybe how well you shift and treat your car along with a two year maintenance schedule for the trans and diff makes a difference.
All my trans synchros were still working perfectly when I pulled and replaced the trans with one with a .806 5th.
The only problem the original trans had was with the input shaft bearing getting noisy.
Sold it to a local running a half bridge single.
He put it in as was and it is still running good but still with that input shaft whirl.
Maybe how well you shift and treat your car along with a two year maintenance schedule for the trans and diff makes a difference.
I've ran Amsoil 75/90 synthetic in my FD, and the feeling is a kin to a well lubed bolt-action rifle.
As for the quick shifts... Couldn't tell you, I never done it in my FD since I hardly drove it.
As for the quick shifts... Couldn't tell you, I never done it in my FD since I hardly drove it.
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Piston Eater
Joined: Jun 2012
Posts: 107
Likes: 0
From: regina SK
I purchased my R1 in June 1992 and ran Redline in both the tans and diff for over 90,000 miles.
All my trans synchros were still working perfectly when I pulled and replaced the trans with one with a .806 5th.
The only problem the original trans had was with the input shaft bearing getting noisy.
Sold it to a local running a half bridge single.
He put it in as was and it is still running good but still with that input shaft whirl.
Maybe how well you shift and treat your car along with a two year maintenance schedule for the trans and diff makes a difference.
All my trans synchros were still working perfectly when I pulled and replaced the trans with one with a .806 5th.
The only problem the original trans had was with the input shaft bearing getting noisy.
Sold it to a local running a half bridge single.
He put it in as was and it is still running good but still with that input shaft whirl.
Maybe how well you shift and treat your car along with a two year maintenance schedule for the trans and diff makes a difference.
I run amsoil in my trans and diff now. I was reading a white paper comparing various trans oils and it seemed to protect the best. before that I had been using royal purple. I put in fresh RP before a track day, and by the end of it, I started losing 5th and 3rd when the trans was really hot after a lapping session. Is it really a cause/effect relationship? Who can say? It could have been caused by a number of factors. For how often the fluid gets changed, the extra cost of Amsoil is not a big deal.
I've been using Amsoil GL-4 75w-90 for the past couple of years. I track the car and change the fluid annually at a minimum. I've settled on Amsoil because it is the most smooth and looks the best at drain intervals. Neo was a very close 2nd so you can't go wrong there either.
About trans noise.
Trans in neutral and clutch engage: a whirring sound from the front is normally the input shaft bearing.
Push the clutch in and you hear a noise, most likely the throw out bearing.
Slowly put it in gear and it clunks and/or hear a front whirring sound, most likely the pilot bearing.
Slowly put it in gear and only initially clunk, dragging clutch.
Trans in neutral and clutch engage: a whirring sound from the front is normally the input shaft bearing.
Push the clutch in and you hear a noise, most likely the throw out bearing.
Slowly put it in gear and it clunks and/or hear a front whirring sound, most likely the pilot bearing.
Slowly put it in gear and only initially clunk, dragging clutch.
Piston Eater
Joined: Jun 2012
Posts: 107
Likes: 0
From: regina SK
About trans noise.
Trans in neutral and clutch engage: a whirring sound from the front is normally the input shaft bearing.
Push the clutch in and you hear a noise, most likely the throw out bearing.
Slowly put it in gear and it clunks and/or hear a front whirring sound, most likely the pilot bearing.
Slowly put it in gear and only initially clunk, dragging clutch.
Trans in neutral and clutch engage: a whirring sound from the front is normally the input shaft bearing.
Push the clutch in and you hear a noise, most likely the throw out bearing.
Slowly put it in gear and it clunks and/or hear a front whirring sound, most likely the pilot bearing.
Slowly put it in gear and only initially clunk, dragging clutch.
enough said!
Amsoil GL4 ... Less 5th gear grind and a bit smoother shifting than Neo. Neo was my first change when I bought the car though. It had the old (whatever didn't drain) overused gear oil from the previous owner mixed in.
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