| Author |
Message |
Simon Campbell (Simonc)
New member
Username: Simonc
Post Number: 23
Registered: 2-2002
| | Posted on Wednesday, July 31, 2002 - 10:04 am: | |
Everyone, epsecially Magoo, is this Mobil 1 Synthetic the same oil that you would use in an engine or is this a different type of Mobil 1 synthetic for the differential/back-axle. I've bought some 0W-40 Mobil 1 synthetic engine oil but just wanted to check that this was correct to use beforehand. The manual says AGIP SAE 85W90 for the back-axle. |
Simon Campbell (Simonc)
New member
Username: Simonc
Post Number: 15
Registered: 2-2002
| | Posted on Wednesday, May 08, 2002 - 3:53 am: | |
I think I'll try Mobil 1 in the diff then and report back in a week or two. Thanks Guys.
Edward - definitely this is not in the gearbox. This is fine. |
Edward G. Salla (350hpmondial)
Junior Member
Username: 350hpmondial
Post Number: 135
Registered: 2-2002
| | Posted on Tuesday, May 07, 2002 - 8:01 pm: | |
Ed, Bill and Magoo,
I gotta go with Tom.
Simon,
Sounds like you need some new band clutches in your GM tranny. Save the new Expensive tranny Fluid for afetr you get a cheep rebuild. I believe a kit is about $100.00 ...... but, a good tech will run you $1,000.00 to put them in.
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magoo (Magoo)
Advanced Member
Username: Magoo
Post Number: 2703
Registered: 2-2001
| | Posted on Tuesday, May 07, 2002 - 1:00 pm: | |
Simon, Mobil 1 synthetic diff. lube is very correct for the differential. You will find many of the guys on this sight including me use the product. |
BretM (Bretm)
Advanced Member
Username: Bretm
Post Number: 2576
Registered: 2-2001
| | Posted on Tuesday, May 07, 2002 - 9:43 am: | |
Mobil 1 synthetic is compatible with limited slip diffs, many claim it to be the best out of the bunch (redline, amsoil, etc). |
Simon Campbell (Simonc)
New member
Username: Simonc
Post Number: 14
Registered: 2-2002
| | Posted on Tuesday, May 07, 2002 - 3:40 am: | |
Tom - feels like it's from the differential, certainly the rear of the car.
Ed - That is just what it feels like. A juddering clutch in the differential. I just changed the oil to fresh automatic gearbox TQF oil, as per the workshop manual (this vibration was there before the change though). Magoo has suggested Mobil 1 synthetic but I have no idea if this is correct for a differential.
Bill - The motor mounts look fine. Maybe I should check the gearbox mounting but I would have thought that a gearbox mounting would be more severe when more power was applied. |
magoo (Magoo)
Advanced Member
Username: Magoo
Post Number: 2699
Registered: 2-2001
| | Posted on Monday, May 06, 2002 - 5:59 pm: | |
It sounds like what Ed said. I would change the fluid to the Mobil 1 synthetic. That should clean things up. |
Bill Sebestyen (Bill308)
Junior Member
Username: Bill308
Post Number: 215
Registered: 5-2001
| | Posted on Monday, May 06, 2002 - 4:22 pm: | |
You might also check the motor mounts. |
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 1313
Registered: 2-2001
| | Posted on Monday, May 06, 2002 - 2:59 pm: | |
If the car was hot and all fluids warmed up then the problem is probably the Positraction clutches in the differential. If it only does it in turns, that is probably your problem. It usually causes no harm but can be cured with a bottle or two of the GM positraction additive available at any GM Dealer. |
TomD (Tifosi)
Member
Username: Tifosi
Post Number: 668
Registered: 9-2001
| | Posted on Monday, May 06, 2002 - 1:42 pm: | |
vibration as in trans slippage? |
Simon Campbell (Simonc)
New member
Username: Simonc
Post Number: 13
Registered: 2-2002
| | Posted on Monday, May 06, 2002 - 1:30 pm: | |
I noticed a slight vibration on my 400 Auto when pulling away and turning slightly right from a junction today. Just a slight judder and it was soon gone but, now I've noticed it, it happens every time. Where should I be looking for the cause of this? |