Topic: ZF Transmission Question
in Forum: C4 Engines, Driveline and Handling
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I want to change the transmission lube in my 92 with a 6 speed ZF. The manual calls for 5W-30 transmission lube. All the auto parts store guys say to just use 5W-30 motor oil because they've never heard of what I'm asking for. Is the lube used in the trans just regular old engine oil?
Thanks,
Dan
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Duncanville, TX - USA
Joined: 3/18/2009
Posts: 2250
Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine.
1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
Use a synthetic auto trans fluid, or regular auto trans fluid(Dextron III)...either will work. Most trans fluid is a 30wt viscosity...since you live up yonder where it gets just a wee bit cool, I'd say use a synthetic...depending on what it has in it now.
Joel Adams 
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Duncanville, TX - USA
Joined: 3/18/2009
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Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine.
1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
Mitchell & Alldata show to use 5W-30 Engine oil, not trans fluid...
Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Thanks for the replies.
I went to the Chevy dealer this morning and bought their syncromesh manual transmission fluid at their recommendation. I figured that was the safest way to go and at only $25 a quart! Did the change about an hour ago and it made a pretty big difference in the way it shifts. 'm a happy guy.
Dan
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Duncanville, TX - USA
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Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine.
1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
Synchromesh is their recommendation because it's $25 a quart! 
I have a ZF spec book somewhere...it gives the recommended fluids for all of their units. I'll see if I can dig that up, but...I know it's in my storage building...in a box of other books/manuals....
I have a ZF spec book somewhere...it gives the recommended fluids for all of their units. I'll see if I can dig that up, but...I know it's in my storage building...in a box of other books/manuals....
Joel Adams
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
[QUOTE=dkretch]I want to change the transmission lube in my 92 with a 6 speed ZF. The manual calls for 5W-30 transmission lube. All the auto parts store guys say to just use 5W-30 motor oil because they've never heard of what I'm asking for. Is the lube used in the trans just regular old engine oil?
Thanks,
Dan
[/QUOTE]
ZF recommends 5W-60 Castrol synth. motor oil.
Can get it at any BMW dealer.
I just put AMSOIL GL3 synchromesh oil in my ZF. I think it's slightly better than either GM or the Castrol synthetic, but only slightly. It's a bargain at $12/quart plus shipping!
Rarely indicted, never convicted
in Forum: C4 Engines, Driveline and Handling
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