Lucas Oil Stabilizer in Front Differential

**indianajeep** · 04-17-2009, 03:06 AM

Lucas oil stabilizer claims that you can put it in up to 100% in differentials and it will help get rid of humming noises. So I put in the lucas as a 100 % replacement in my Dana 30. Has anyone else tried this. Does anyone think this is a bad idea?

**ratmonkey** · 04-17-2009, 05:02 AM

i would use only gl5 rated oils of the correct weight for your application.

**indianajeep** · 04-17-2009, 03:19 PM

bump- anyone else want to offer ideas/opinions?

volvite · 04-17-2009, 04:44 PM

Never heard anything bad about Lucas. I use it in everything, but havent done any diff fluid changes yet. Post back with your findings.

rooster51 · 04-17-2009, 04:51 PM

let us know how it works out, ive thought about that myself, just not brave enough to try it out

**indianajeep** · 04-17-2009, 04:52 PM

welll, so far the differential is quieter, but still hums a little. I felt the pumpkin after a 40 mile drive and it was the same temperature as the rear axle. So I'm going to leave it in for a while and see how it does. It's petroleum based and thicker than maple syrup on a zero degree morning, so I know the metal to metal anti-friction properties must be good.

Greeeeenberg · 04-17-2009, 04:54 PM

Well lucas stabilizer just thickens stuff up right?? So i imagine it would be okay for diffs. I wouldnt run a ton of it the motor cause its sticky and i think would create deposits. That just me thinking out loud. As far as a diff, i that makes sense that stuff is thicker then gear lube. I guess just do a search on it in google

Edit:
http://www.cumminsforum.com/forum/al...tabilizer.html - Users

http://lucasoil.hodgsoncorp.com/luca...stabilizer.htm - Company

**indianajeep** · 04-17-2009, 11:27 PM

I wussed out after reading through different boards and emptied out all but 1/2 quart of the lucas and put in Royal Purple 75W 90.

sandman · 04-18-2009, 12:56 AM

Quote:

Originally Posted by indianajeep

I wussed out after reading through different boards and emptied out all but 1/2 quart of the lucas and put in Royal Purple 75W 90.

good idea.....

1941Galant · 04-18-2009, 06:56 AM

Hopefully it doesn't foam up on you. Here is the main reason lucas additives won't go into anything that I drive.

http://www.bobistheoilguy.com/images/lucas/lucas.htm

1941Galant · 04-18-2009, 07:14 AM

Edit* Double post because I'm a newb.

gomes512 · 04-18-2009, 02:30 PM

Lucas oil stabilizer is a waste, you should have emptied it ALL out. It's just a brightstock base with virtually no antiwear additives.

If you want something thick go with a GL5 85w-140 gear oil, if it sees cold go with a 75-140. However, a 90 weight is also sufficient for the D30.

Don't put that stuff in your motor either, if you want thick then just use add a straight 50 or 60 weight oil, at least they will have antiwear additives.

**indianajeep** · 04-18-2009, 02:48 PM

I would never put an additive in my engines. If synthetic oil can't keep the engine running quiet, then it's time to rebuild it or remove it. As far as Bob's thread, there is some question about the validity of comparing his test to real world applications. I didn't put as much stock in it as a poster on a Dodge Dakota site saying he ran pure lucas oil stabilizer in his axle and the pinion bearings ran dry. That convinced me to remove most of it. The axle definitely is quieter with a mix of 1/2 quart lucas to 1 quart royal purple. I tried the 75W 140 synthetic, and it was still humming the same as with the straight 75w 90. Next year, I'll cough up the cash and have the differential rebuilt. I figure the axle can survive another 10,000 miles.

gomes512 · 04-18-2009, 02:58 PM

Quote:

Originally Posted by indianajeep

I would never put an additive in my engines. If synthetic oil can't keep the engine running quiet, then it's time to rebuild it or remove it.

Good man

I have heard of Royal Purple being good at quieting down difffs, I'm sure it is more the RP than the Lucas. You could probably get more than 10K out of it, but either way something will need fixing like you said.

**indianajeep** · 04-19-2009, 10:34 PM

After going through all the trouble of adding lucas, removing the lucas, putting back in royal purple, the drivetrain still hummed - though not as much or as loudly. Today I rotated the tires, and the hum went away completely. So, is it possible that the transfer case or axle was humming due to tire wear and the need for tire rotation. The tires have 7000 miles on them.