what gear oil ??
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
what gear oil ??
cant make up my mind 
do i go for
Castrol 10w60 BMW part no 0751009420 or
Royal purple syncromax
1990 6sp
Thanks in advance for your advice / experiance with either of the above oils.
do i go for Castrol 10w60 BMW part no 0751009420 or
Royal purple syncromax
1990 6sp
Thanks in advance for your advice / experiance with either of the above oils.
Melting Slicks
Joined: Jul 2003
Posts: 2,140
Likes: 0
From: Cincinnati Ohio
I went with the Castrol.
I bet you wouldnt feel any diffrence between the two. I'm sure the RP is good stuff too. Just the fact that its new fill is what helps. My tranny got a little quieter and the shifts felt a little smoother in throw.
mines a 92 with the B&M ripper
I bet you wouldnt feel any diffrence between the two. I'm sure the RP is good stuff too. Just the fact that its new fill is what helps. My tranny got a little quieter and the shifts felt a little smoother in throw.
mines a 92 with the B&M ripper
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by Powerdrive
I went with the Castrol.
I bet you wouldnt feel any diffrence between the two. I'm sure the RP is good stuff too. Just the fact that its new fill is what helps. My tranny got a little quieter and the shifts felt a little smoother in throw.
mines a 92 with the B&M ripper
I bet you wouldnt feel any diffrence between the two. I'm sure the RP is good stuff too. Just the fact that its new fill is what helps. My tranny got a little quieter and the shifts felt a little smoother in throw.
mines a 92 with the B&M ripper
Melting Slicks
Joined: Dec 2004
Posts: 2,954
Likes: 2
From: Obama=death for America
Yesterday, I spoke to Shafi Keisler from Keisler Engineering regarding a new transmission and the use of Royal Purple Synchromax in the transmission. He advised against it. He said something about the internals didn't mix well with the Royal Purple.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
since starting this thread ive also heard of problems with Royal purple in Getrag gearboxes ref phospher bronze componants swelling up !!!!
Soooooo I think I am going to go with the Castrol it seams a safer bet, again thanks for your thoughts
Ive just got to get the rest of my engine built and back in , just thinking ahead while wating for some parts to arrive from Mearl Its a long way from Arazona to England!!
Soooooo I think I am going to go with the Castrol it seams a safer bet, again thanks for your thoughts
Ive just got to get the rest of my engine built and back in , just thinking ahead while wating for some parts to arrive from Mearl Its a long way from Arazona to England!!
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by adi4
since starting this thread ive also heard of problems with Royal purple in Getrag gearboxes ref phospher bronze componants swelling up !!!!
Soooooo I think I am going to go with the Castrol it seams a safer bet, again thanks for your thoughts
Ive just got to get the rest of my engine built and back in , just thinking ahead while wating for some parts to arrive from Mearl Its a long way from Arazona to England!!
Soooooo I think I am going to go with the Castrol it seams a safer bet, again thanks for your thoughts
Ive just got to get the rest of my engine built and back in , just thinking ahead while wating for some parts to arrive from Mearl Its a long way from Arazona to England!!
However, going with the Castrol is a safe bet - one you will not regret!!!
If this means anything to you, it's the only oil I will use in my ZF6.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by bogus
Again, Getrag is different than ZF.
However, going with the Castrol is a safe bet - one you will not regret!!!
If this means anything to you, it's the only oil I will use in my ZF6.
However, going with the Castrol is a safe bet - one you will not regret!!!
If this means anything to you, it's the only oil I will use in my ZF6.
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Melting Slicks
Joined: Dec 2004
Posts: 2,519
Likes: 762
Hope you have better luck than I in removing plugs
I too was going to change the fluid in my six-speed transmission in my 1990 Corvette. I put the car up on ramps twice and both times failed to get the fill plug out. I used a 17 mm Allen wrench and a 17 mm hex socket on a breaker bar. I used a floor jack to put torque on the plug and I could see that all of this effort was doing nothing more than slowly destroying the plug. At the outset, I used a penetrating lubricant. I'll have to take it to a local Corvette shop. I've already got the new plugs for the shop to use to replace the old ones. -- Eric
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
stuck level plug in a ZF box , hmmmmmm that will be a " german thing " they didnt win the war, but they have been getting back at us ever since...... who said they didnt have a sence of humor 
good luck on getting your plug out ,
hopefully mine wont be a pain in the a$$ , now I ve said that it probably will , my g/box is on the floor at the mo surrounded with a pile of vette intestine
good luck on getting your plug out , hopefully mine wont be a pain in the a$$ , now I ve said that it probably will , my g/box is on the floor at the mo surrounded with a pile of vette intestine
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by Photomania
I too was going to change the fluid in my six-speed transmission in my 1990 Corvette. I put the car up on ramps twice and both times failed to get the fill plug out. I used a 17 mm Allen wrench and a 17 mm hex socket on a breaker bar. I used a floor jack to put torque on the plug and I could see that all of this effort was doing nothing more than slowly destroying the plug. At the outset, I used a penetrating lubricant. I'll have to take it to a local Corvette shop. I've already got the new plugs for the shop to use to replace the old ones. -- Eric
You really need some height to get some torque on it.
Race Director
Joined: Dec 2002
Posts: 13,348
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by adi4
ive also heard of problems with Royal purple in Getrag gearboxes ref phospher bronze componants swelling up !!
Metals don't "swell up".
Larry
code5coupe
Race Director
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
As was said above, GM or Castrol will be fine. I change my tranny oil every other time I change the engine oil. I know over kill, and I use the GM synthetic oil, just because it's easier for me to get.
Race Director
Joined: Dec 2002
Posts: 13,348
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
I put the Castrol/BMW oil in my ZF, too, but something bothers me:
The Castrol is engine oil. Engine lubricant and gearbox lubricants live in completely different environments, deal with very differents loads, temperatures, and contaminents. Yet, in this case they are interchangable?
I wouldn't put gear lube in my engine, how does the zfDoc figure engine oil is best for my gearbox????
Somebody tell me where my thinking is messed up....please!
Otherwise I'm gonna' feel compelled to change back to the recommended GM fill.
Larry
code5coupe
The Castrol is engine oil. Engine lubricant and gearbox lubricants live in completely different environments, deal with very differents loads, temperatures, and contaminents. Yet, in this case they are interchangable?
I wouldn't put gear lube in my engine, how does the zfDoc figure engine oil is best for my gearbox????
Somebody tell me where my thinking is messed up....please!
Otherwise I'm gonna' feel compelled to change back to the recommended GM fill.
Larry
code5coupe
