T5 gearbox oil
Discussion
I know there have been several posts in the past on this subject, but all non conclusive.
Now my box has been refurbished by 'the man himself' but installed by another who put in Syntrax oil not the recommended ATF. The reason given was 'to offer better protection to the 5th gear bearing'.
In the recent cold weather and when the car is cold, it has been difficult to do a clean change between 1st and second without a graunch and a couple of times it hasn't gone into 3rd gear. All is okay when box has warmed up, but local journeys are a pain.
Would the thinner ATF help with this ?
Also I came across a Tremec T5 manual on line which states :_
2-4. APPROVED LUBRICANT. Most T5
transmission models use DexronÒ II automatic
transmission fluid. Refer the vehicle owner’s manual
or service manual for lubricant specifications.
CAUTION
Do not mix different bands or types of transmission
lubricant. DO NOT USE GEAR OIL IN THE T5
TRANSMISSION SINCE THIS MAY DAMAGE THE
BLOCKING RING MATERIAL.
Reading elsewhere, I believe TVRs were fitted with the 'World class' box which has composite syncro rings , which may explain the above caution.
Any comments anyone please, as I have conflicting info from 2 respected professionals and don't have enough information to decide which to go with.
Now my box has been refurbished by 'the man himself' but installed by another who put in Syntrax oil not the recommended ATF. The reason given was 'to offer better protection to the 5th gear bearing'.
In the recent cold weather and when the car is cold, it has been difficult to do a clean change between 1st and second without a graunch and a couple of times it hasn't gone into 3rd gear. All is okay when box has warmed up, but local journeys are a pain.
Would the thinner ATF help with this ?
Also I came across a Tremec T5 manual on line which states :_
2-4. APPROVED LUBRICANT. Most T5
transmission models use DexronÒ II automatic
transmission fluid. Refer the vehicle owner’s manual
or service manual for lubricant specifications.
CAUTION
Do not mix different bands or types of transmission
lubricant. DO NOT USE GEAR OIL IN THE T5
TRANSMISSION SINCE THIS MAY DAMAGE THE
BLOCKING RING MATERIAL.
Reading elsewhere, I believe TVRs were fitted with the 'World class' box which has composite syncro rings , which may explain the above caution.
Any comments anyone please, as I have conflicting info from 2 respected professionals and don't have enough information to decide which to go with.
Edited by WokingWedger on Tuesday 13th January 15:19
Ok thanks all.
I have spoken with the gearbox builder and he says I should get the Syntrax out as it may stop things bedding in. (having just been refurbished).
I need a mineral ATF (got to be careful as some ATFs are semi synthetic)
Castrol Transmax ATF I believe is fully synthetic !
(He did mention possibly using Royal Purple if I want, when fully run in.)
I have spoken with the gearbox builder and he says I should get the Syntrax out as it may stop things bedding in. (having just been refurbished).
I need a mineral ATF (got to be careful as some ATFs are semi synthetic)
Castrol Transmax ATF I believe is fully synthetic !
(He did mention possibly using Royal Purple if I want, when fully run in.)
Edited by WokingWedger on Wednesday 14th January 11:40
Ah
From Castrol Website
CASTROL TRANSMAX Z
Fully synthetic automatic transmission fluid.
CASTROL TRANSMAX DEX III MULTIVEHICLE (previously known as ATF TQ DIII)
General purpose mineral based automatic transmission and power steering fluid.
Can be used in place of ATF Dex II Multivehicle.
Guess I will go for this then.
From Castrol Website
CASTROL TRANSMAX Z
Fully synthetic automatic transmission fluid.
CASTROL TRANSMAX DEX III MULTIVEHICLE (previously known as ATF TQ DIII)
General purpose mineral based automatic transmission and power steering fluid.
Can be used in place of ATF Dex II Multivehicle.
Guess I will go for this then.
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