How long have you dealt with this shop? Did you meet the mechanic?
Do they stand behind their work?
Do they stand behind their work?
More Amsoil Black Gear Oil
- Thread starter Gebo
- Start date
I’ve never dealt with ECG before. I’ve got to get more info. Is there a good lab you recommend that checks gear oil? What do I check for?
Let me add this that may affect your advice.
ECG supply did not replace the seals when they replaced the rear diff. It ended up leaking on the backing plates on both sides. (I did check the fill hole and it was still good and full.) That is why my mechanic replaced everything from brake shoes to the rear diff. The leak had ruined my brake shoes.
ECG supply did not replace the seals when they replaced the rear diff. It ended up leaking on the backing plates on both sides. (I did check the fill hole and it was still good and full.) That is why my mechanic replaced everything from brake shoes to the rear diff. The leak had ruined my brake shoes.
- Joined
- May 25, 2020
- Messages
- 2,822
@Gebo AMSOIL Severe Gear contains a good amount of alkylated naphthalene. That is a base oil that also has extremely good cleaning properties. AMSOIL has an industrial facility for blending and packaging their lubricants. Because of how such facilities operate, it is impossible to get a bad batch. To put it into perspective, you have a greater chance of winning the Power Ball or getting struck by lightning twice than getting a "bad" batch of AMSOIL gear oil.
This is not going to be cheap, but in the grand scheme of things it is going to be cheaper than taking your diff apart again or arguing with the shop. Get some more AMSOIL in your favorite viscosity. Change it twice every 1000 to 2000 miles. If the it keeps coming out black then you have an issue. If it starts brightening then it just cleaned the dirt left by the diff that went bad.
AMSOIL Severe Gear is one of the best products that AMSOIL makes. For example I'm not a fan of their ATF, but their gear oil is really good. It uses a proprietary formulation with the base oils borrowed from their wind turbine oils and the additive package is made by Lubrizol. It's a modern low Phosphorus-Sulfur additive package.
Or you can make more assumptions and try this, try that, without any results. The choice is yours.
This is not going to be cheap, but in the grand scheme of things it is going to be cheaper than taking your diff apart again or arguing with the shop. Get some more AMSOIL in your favorite viscosity. Change it twice every 1000 to 2000 miles. If the it keeps coming out black then you have an issue. If it starts brightening then it just cleaned the dirt left by the diff that went bad.
AMSOIL Severe Gear is one of the best products that AMSOIL makes. For example I'm not a fan of their ATF, but their gear oil is really good. It uses a proprietary formulation with the base oils borrowed from their wind turbine oils and the additive package is made by Lubrizol. It's a modern low Phosphorus-Sulfur additive package.
Or you can make more assumptions and try this, try that, without any results. The choice is yours.
Find the problem in your differential. It's not the gear oil. I am with Pablo and others on this.
Nope
I have run 75w-90 Amsoil Severe Gear in everything I've owned for 15+ yrs. It's never been black when changed. Recently I changed/drained the 4.5 gals out of our motorhome differential housing and did an analysis.
Here's the thread I did:
https://bobistheoilguy.com/forums/threads/75w-90-where-to-send-my-sample-for-analysis.360658/
There’s a brilliant man on here I have been pm’ing. He believes the Amsoil is just cleaning out the residue from the initial mess up.
He, like most of you, suggests doing a few more changes every 1000 k so or and see what happens.
Also, this is the rear diff that had the rear plate replaced and welded back on before the rear diff went bad.
He, like most of you, suggests doing a few more changes every 1000 k so or and see what happens.
Also, this is the rear diff that had the rear plate replaced and welded back on before the rear diff went bad.
I agree. I am not bashing a product I have been loyal to for 35 years. It just scared me that I have seen this 2 times in 4 months. And I just paid $3k to fix it. Yikes!!!!
How long is their warranty?
Reinstall the Lucas product they recommend and keep driving. If there is truly an issue, the diff should grenade pretty quickly.
Reinstall the Lucas product they recommend and keep driving. If there is truly an issue, the diff should grenade pretty quickly.
- Joined
- May 25, 2020
- Messages
- 2,822
Interesting logic...
If it’s going to fail, let it fail using their recommended gear oil. That way, they can’t blame the oil.Interesting logic...
I've had my fair share of diff issues- due to GM guv-loc replacement with a Trutrtac. Friend/mechanic did the job and set it up wrong- so cost me again for labour and bearings. Two choices- find a guy who REAlly knows what he's doing (as I did with no issues since) or find a unmolested oe diff at the breaker. There's no magic oil that will crutch a defective diff.
- Joined
- May 25, 2020
- Messages
- 2,822
That looks very ... metallic.
Yeah, not black and oxidizedThat looks very ... metallic.
Highboy
Site Donor 2022
Put a magnet on the side and see what it attracts.
