CV joint grease, high moly or high ZDDP?

[volk06]

I have 2 greases at my disposal. One grease is a moly grease but has not zddp. The other grease has ZDDP but no moly. I'll be using the grease to shoot into my cv joint boot on the taurus as the clamp slide of and a little bit of grease slung out.

 

[gregk24]

Originally Posted By: volk06
I have 2 greases at my disposal. One grease is a moly grease but has not zddp. The other grease has ZDDP but no moly. I'll be using the grease to shoot into my cv joint boot on the taurus as the clamp slide of and a little bit of grease slung out.


maybe some of both?

 

[Chris142]

Moly

 

[stephen9666]

You could just buy the real CV grease. It's cheap at auto parts stores.

 

[volk06]

Originally Posted By: stephen9666
You could just buy the real CV grease. It's cheap at auto parts stores.


Both of the greases are acceptable for use in CV joints, just want to know which one is the better additive for the joints. The problems with the CV grease you get at most auto parts stores is that it comes in a small pouch which makes it hard to inject with the needle.

 

[Quest]

Unless (a) you've lost over 1/2 of the grease from the CV boot, or (b) you have introduced grit and moisture into the grease inside the CV boot, otherwise, provided that your boot is still intact, I'd just slip the boot back in, install a proper CV boot clamp (no, not the hoseclamp with a screw, but a real stainless steel band clamp), wipe it clean and then call the day.

I'd be more worried about grease compatibility issues when injecting grease into the CV then anything else.

I have, in the past, reuse original NTN CV grease that came along with the shaft (during preventative maintenance boot replacement--original CV boot still intact). The shaft itself lasted over 300k the last time I saw my car in the hood...For those that are in-doubt: I typically disassemble the entire CV joint, wash off all the old grease, blow-dry and then repack with aftermarket boot and those grease pouch (typically came with the boot kit). Never any comebacks so far...

Q.

 

[Gabe]

I agree that injecting grease into the boot is a bad idea.

Ignoring sound advice, I would go moly. ZDDP is great stuff, but the properties don't really apply here.

 

[volk06]

The clamp slipped off and everything else looks to be intact. I noticed this when I was chaning my front brakes. There was some grease splattered around but it didnt look like much but I don't know how much was suppose to be in there. There are no noises or grinding noises coming from the joint. So I wont stick anymore in it.

 

[Quest]

curious: why would the clamp slipped off? Is this an aftermaket boot(or CV shaft)? or has it been re-packed with an aftermaket boot before?

IMHO losing about 30gms of grease (approx. 2 tablespoons worth) is not that big of a deal (IMO, based on my experiences in the past)...provided that no grits and moisture got into the grease, I'd put the boot back, install a new CV band clamp and call it a day.

No need to worry about if it's about 30gms or less of grease spillage. The CV joints need clean grease to circulate and tranfer heat more than having the precise amount inside.

(*the only exception to the rule is MB where repacking calls for very specific amount of grease, nothing less/more*)

Q.

 

[volk06]

Originally Posted By: Quest
curious: why would the clamp slipped off? Is this an aftermaket boot(or CV shaft)? or has it been re-packed with an aftermaket boot before?

IMHO losing about 30gms of grease (approx. 2 tablespoons worth) is not that big of a deal (IMO, based on my experiences in the past)...provided that no grits and moisture got into the grease, I'd put the boot back, install a new CV band clamp and call it a day.

No need to worry about if it's about 30gms or less of grease spillage. The CV joints need clean grease to circulate and tranfer heat more than having the precise amount inside.

(*the only exception to the rule is MB where repacking calls for very specific amount of grease, nothing less/more*)

Q.


Looked like the crimp on the clamp just gave out and came loose.

 

[Quest]

sounds like aftermaket boot (shaft) or repack job.

Ordinary factory shaft, the boot never seem to slip off or crimp breaks loose.


Q.

 

[volk06]

Originally Posted By: Quest
sounds like aftermaket boot (shaft) or repack job.

Ordinary factory shaft, the boot never seem to slip off or crimp breaks loose.


Q.


I didnt refill it with any grease and it does look like an aftermarket boot job done a few years ago. I didn't refill it because if I do need to have it redo, a whole cv axle shaft is not much more than a boot kit.

 

[artificialist]

Valvoline Durablend is a moly grease, and it says it is suitable for CV joints.

That in mind, I don't know what moly grease you have, so I can't make any exact recommendations.