Best T56 fluid?
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
O.k., this is bugging me, like a lot of Internet "facts".. Just because something is repeated a 1,000 times doesn't make it true.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
Former Vendor
Joined: May 2003
Posts: 1,313
Likes: 4
From: Livermore CA
O.k., this is bugging me, like a lot of Internet "facts".. Just because something is repeated a 1,000 times doesn't make it true.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
Rick
Advanced
Joined: Dec 2006
Posts: 61
Likes: 0
From: Ontario CA
I just had my tranny rebuilt and the shop put Mobil 1 Synthetic no complaines yet.
originally posted by another member....
AMSOIL "White Paper" Gear Lube Study - GM, Royal Purple Redline, AMSOIL
--------------------------------------------------------------------------------
For those interested in a comprehensive comparison of the major gear lubes on the market, AMSOIL just released this today. While this was a study commissioned by AMSOIL, it is still a very interesting read.
Gear lubes tested:
Synthetics:
AMSOIL Severe Gear 75W-90
Castrol SYNTEC 75W-90
GM Synthetic Axle 75W-90
Lucas 75/90 Synthetic
Mobil 1 Synthetic 75W-90
Mopar Synthetic 75W-90 with Mopar LS additive
Pennzoil Synthetic 75W-90
Red Line Synthetic 75W-90
Royal Purple Max-Gear 75W-90
Torco SGO Synthetic 75W-90 with Torco Type G LS additive
Valvoline SynPower 75W-90
Petroleum Candidates
Castrol Hypoy C 80W-90
Pennzoil Gearplus 80W-90
Valvoline High Performance 80W-90
AMSOIL Gear Lube “White Paper” (481 KB pdf file)
originally posted by another member....
AMSOIL "White Paper" Gear Lube Study - GM, Royal Purple Redline, AMSOIL
--------------------------------------------------------------------------------
For those interested in a comprehensive comparison of the major gear lubes on the market, AMSOIL just released this today. While this was a study commissioned by AMSOIL, it is still a very interesting read.
Gear lubes tested:
Synthetics:
AMSOIL Severe Gear 75W-90
Castrol SYNTEC 75W-90
GM Synthetic Axle 75W-90
Lucas 75/90 Synthetic
Mobil 1 Synthetic 75W-90
Mopar Synthetic 75W-90 with Mopar LS additive
Pennzoil Synthetic 75W-90
Red Line Synthetic 75W-90
Royal Purple Max-Gear 75W-90
Torco SGO Synthetic 75W-90 with Torco Type G LS additive
Valvoline SynPower 75W-90
Petroleum Candidates
Castrol Hypoy C 80W-90
Pennzoil Gearplus 80W-90
Valvoline High Performance 80W-90
AMSOIL Gear Lube “White Paper” (481 KB pdf file)
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
O.k., this is bugging me, like a lot of Internet "facts".. Just because something is repeated a 1,000 times doesn't make it true.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
I'm at approx. 25K miles with Red Line MTL; my poor, helpless paper blocking rings seem to be holding up beautifully, shifts as good as a T56 with linkage can shift.
Until someone definitively proves that RL MTL is harmful to older transmissions, I'll continue to be blissfully ignorant.
Safety Car
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
I think a lot of posts need some clarification.
Are folks running a totally OE tranny or an upgraded tranny???
It's one thing to know what fluid is best for an OE tranny with the paper blocker rings. But, there are a lot of folks that have rebuilt or upgraded the tranny and probably had the paper rings removed so they can run fine on a totally different fluid.
We've got to remember to compare apples to apples especially when your talking about "what's the best fluid"
Are folks running a totally OE tranny or an upgraded tranny???
It's one thing to know what fluid is best for an OE tranny with the paper blocker rings. But, there are a lot of folks that have rebuilt or upgraded the tranny and probably had the paper rings removed so they can run fine on a totally different fluid.
We've got to remember to compare apples to apples especially when your talking about "what's the best fluid"
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
I believe Phil at DTE recommends this fluid as well. The only downside I am aware of (or have been told) is harder shifting when cold. Not sure on the blockers. That said, mine doesn't exactly shift like butter cold with the Amsoil either so it may just be characteristic of the tranny itself. Knowing this, I am pretty careful shifting this time of year now the the temp has dropped until things warm up.
Did you see that thread over in LS1Tech talking about how roller-tipped rockers really don't roll over the valve tip, another reason stock rockers are superior? An interesting argument and I can see how it would be possible that at high RPM's + high loads that the roller might slide vs. roll over the tip.. Always something..
