TheG
New Member
- Joined
- April 18, 2011
- Messages
- 3
- Reaction score
- 0
- City, State
- Minnesota
- Year, Model & Trim Level
- 2002 XLS 4WD
So, here's the deal:
Have a 2002 explorer with a code 45 (open 3.55) rear differential. 135,000+ miles.
It has the rear diff whine that the Internet tells me is extremely common, and that many have failed to correct it (even after expensive repairs).
The noise didn't bother me much until I recently purchased quiet tires. Now it's noticeable, mostly when holding constant speed.
I change the diff fluid with (75-140) synthetic oil every summer, which doesn't seem to help a whole lot. I've even used synth fluid that "already has LS modifier" (though I am skeptical of their claims). I'm considering buying a bottle of friction modifier in an attempt to quiet it down.
So, 3 questions, sorry if they are ignorant:
1) Is it ok to put friction modifier in a non-LS diff?
2) If I use the oil in my garage that claims to already have it, can adding more be dangerous?
3) Any other additives that might have some hope of quieting it down?
Thank you!
Have a 2002 explorer with a code 45 (open 3.55) rear differential. 135,000+ miles.
It has the rear diff whine that the Internet tells me is extremely common, and that many have failed to correct it (even after expensive repairs).
The noise didn't bother me much until I recently purchased quiet tires. Now it's noticeable, mostly when holding constant speed.
I change the diff fluid with (75-140) synthetic oil every summer, which doesn't seem to help a whole lot. I've even used synth fluid that "already has LS modifier" (though I am skeptical of their claims). I'm considering buying a bottle of friction modifier in an attempt to quiet it down.
So, 3 questions, sorry if they are ignorant:
1) Is it ok to put friction modifier in a non-LS diff?
2) If I use the oil in my garage that claims to already have it, can adding more be dangerous?
3) Any other additives that might have some hope of quieting it down?
Thank you!