Wierd rear end vibration and noise while turning

june.....

Why don't you just use regular old 85W90 with the Ford FM and change it more often??

Dennis Reinhart was not too enthusiastic about synthetics for the rear end and the cost was the deciding factor for me......Sometimes price doesn't equate to the perceived quality or benefit!!?? :down:

I had over 200K miles on my 2000 CV before the axles were replaced and I still think they were the "soft" ones that Ford has been installing?? :confused: I only used the standard lube and changed it every 50K miles....It never looked bad or had an abnormal amount of metal on the magnetic plug until I noticed the roaring noise above 50 MPH......New axles and bearings and all was OK!! :up:

BTW...The guy who rebuilt the rear end didn't think synthetics were worthwhile either??

Glad yours has quieted down.....You had me listening real close to mine too!! :eek:

Marauderjack :D
 
Jack, the Marauders come from the factory filled with synthetic gear lube if i'm correct, which is as good enough of a reason as I need to stay with a synthetic gear lube. If it's good enough for factory fill, then it's definately good enough for me. Besides, a high quality synthetic will reduce friction and reduce heat as a result.
 
Same Issue with Amsoil Synthetic Lube - Is this a problem???

Friends, since I installed the 4.10s a few weeks ago, I have had the same grating/moaning/rubbing noise/sensation from the rear end under throttle from dead stand still taking sharp left or right hand turns.

QUESTION: IS THIS A PROBLEM? Amsoil says that you don't need the friction modifier, but that if you want it, you can add it. They sell a synthetic version that can be used in conjunction with their lubricants.

My question is, does it matter if it moans/rubs?

I asked the mechanic. He said 'No'. He said that the additive was developed to address the bad aesthetics. Your average Joe or Jane won't be comfortable with the noise, and will bring the car back for service. So, they use additives from the factory to get rid of the sound.

Is this true, or does the additive prolong clutch life?

By the way, my old clutches that had 100,000 miles on them with the original, factory lube looked ALMOST NEW. I don't think the previous owner ever engaged them!

Back to the subject: I'm wondering who to believe about the noise. It seems to me that my clutches must be feeling the pressure, because they are moaning without the friction modifier. Shouldn't they wear out quicker, if they are grating like that?

At the same time, how can they work properly, if they are made so slippery that they don't grab one another? I certainly do love the way they work ;)

Any input you guys can give me I'd very much appreciate. Happy 'rauding!

fastcar:burnout:
 
Fast Forward 3 years, 2 months and 2 days....or so!!??:eek:

Put the FM in and forgedaboudit!!:beer:

Marauderjack:burnout:

PS: Them there Rovers are still FUGLY!!!!:mad2:
 
I know, I'm a relentless inquisitor, and learner. I'm trying to find out if it's NECESSARY, or just for aesthetics.

I think this is a worthy question for those who are mechanically inclined or interested.

I like the idea of it being 'grabby', and will live with it if it won't get ruined.

fastcar:burnout:
 
It is hard on your tires and drive train innards to hop and chop around corners!!:argue:

Using the FM does not diminish performance in any way.....just use it and be happy you have a nice car to use it in!!:D

Marauderjack:burnout:
 
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