Amsoil Question

[Archive]

Hey Amsoilman,

I am considering putting Amsoil Series 2000 Synthetic 75W-140 Gear Lube in my Dana 80 Limited Slip Rear Axle when I install the Mag-Hytec cover. Will this oil take care of the limited slip clutches or will I have to continue to use the Chrysler Limited Slip Additive(Skunk Pee)? Will the Amsoil be compatabile with the factory fill synthetic(?) oil?

I have heard from one source that the Amsoil will not need the additional limited slip additive, but that guy was appeared to be a little on the snake oil side!! I'd rather hear it from you.

Thanks, Bill


------------------
97,3500,CC,4x2, Auto, 4. 10, All Options incl Leather, PacBrake, 3 Pos Lockup Switch, PrimeLoc,80% Towing 12,000+LB 5th Wheel, Mag-Hytec Covers on the way!!

 

[Archive]

Bill,
I have only sold one case of the series 2000 75W-140 gearlube since it came out. Most everyone that comes to me wants the Series 2000 75W-90. It is $3. 00 per quart less, and it does a great job! I even have some heavy duty 18 wheeler's that are using it with great results.

As too the additive for the LS differentials, I have only heard of one person who has installed this after putting the Amsoil in. The ones that I have done, and there are many, have not had the additive installed.

I would say this. Try it first, then if you need it, put the additive in.

Wayne
amsoilman

 

[Archive]

I have Series 2000 75W-90 in my truck and I had to add the friction modifier due to clunking around turns. It didn't clunk as bad as when I tried using Red Line, and they claim you don't need friction modifiers on the bottle.

 

[Archive]

Hey Amsoilman, Again,

I thought the 75W-140 would be better than the 75W-90 in the rear axle running in Texas due to the heat. This summer I left Texas for the TDR Nationals with the temperature at 107 degrees and towed my 5th wheel all afternoon at this temp. at 60-65 MPH. I would like to have had a temp. gauge on the rear end!! A real test on the engine and drivetrain!!

The Valvoline rep. at the TDR Nationals said I should use 75W-140 and that they didn't make a synthetic 75W-140 only 75W-90. He was very honest about it and didn't try to steer me to their 75W-90.

Do you know what Dana/Spicer uses in the factory fill on the 1997 80's?

Is price the only reason you don't sell the 75W-140? I don't want to sacrifice durability for $3/qt. The additional cost wouldn't even pay the labor to put the truck on the lift to replace the bearings!!!

Thanks, Bill

 

[Archive]

Bill:

Amsoils Series 2K 75W90 is good to 400 degrees. You might see 200 degrees under a very hot day and hard pulling.

It is more than adequate.

I am going to guess the diffs come from the factory with straight 90 weight non-sythetic.

No matter what you put in, change it every 30 - 40K. Espeially if you pull much.

jjw
ND

 

[Archive]

Bill,
In looking at the specification sheets for both the 75W-90 and the 75W-140 series 2000 gear lubes, I see there is no difference in the wear on the Four Ball Wear Test.
[ASTM D4172B] They are both at 0. 40 mm.

The Volatility, % weight loss [DIN51581] the 75W-90 is 11. 4 percent, and the 75W140 is 14. 5 percent. They both have the same “pour point”. [-51 Deg F] The Fire point is 428 Deg F for the 75W-140, and 421 Deg F for the 75W-90.

They are both rated for the API MT-1, however the 75W-90 is a GL2 through GL5, and the 75W140 is only a GL5.

Amsoil claims for limited slip performance, the extra additives are not necessarily needed, but can be used in conjunction with the series 2000 lubes. They make a note that most manufacturers recommend driving a vehicle in a tight figure “8” patterns eight to ten times after changing limited slip lubricants. They also state “In non-commercial vehicles operated under normal conditions, the series 2000 lubes do not have to be drained, and in cases of severe water or dirt contamination lube analysis can determine if the gear lube is still serviceable.

As too why I sell more of the 75W-90, I can not tell you why, but I do know I have seen the 75W-90 used in eighteen wheel trucks as well as trucks our size, and they seem to work just fine. As I said, the 75W-140 is a couple of dollars more money.

Hope this clears up the questions.

Best regards,

Wayne
amsoilman

 

[Archive]

Bill,
In looking at the specification sheets for both the 75W-90 and the 75W-140 series 2000 gear lubes, I see there is no difference in the wear on the Four Ball Wear Test.
[ASTM D4172B] They are both at 0. 40 mm.

The Volatility, % weight loss [DIN51581] the 75W-90 is 11. 4 percent, and the 75W140 is 14. 5 percent. They both have the same “pour point”. [-51 Deg F] The Fire point is 428 Deg F for the 75W-140, and 421 Deg F for the 75W-90.

They are both rated for the API MT-1, however the 75W-90 is a GL2 through GL5, and the 75W140 is only a GL5.

Amsoil claims for limited slip performance, the extra additives are not necessarily needed, but can be used in conjunction with the series 2000 lubes. They make a note that most manufacturers recommend driving a vehicle in a tight figure “8” patterns eight to ten times after changing limited slip lubricants. They also state “In non-commercial vehicles operated under normal conditions, the series 2000 lubes do not have to be drained, and in cases of severe water or dirt contamination lube analysis can determine if the gear lube is still serviceable.

As too why I sell more of the 75W-90, I can not tell you why, but I do know I have seen the 75W-90 used in eighteen wheel trucks as well as trucks our size, and they seem to work just fine. As I said, the 75W-140 is a couple of dollars more money.

Hope this clears up the questions.

Best regards,

Wayne
amsoilman

 

[Archive]

When I serviced my axle @ 25k, I used Amsoil
140 wt. as I pull a heavy glass rack trailer and it has been hot down here on the Gulf Coast this summer. I added a tube of NAPA friction modifier just to be on the safe side and have had no problems. I also drilled the cover and installed a NAPA drain plug fitting (actually made for auto trannies) to save time and work the next time I service the axle.

------------------
Bill Lins Wharton, TX
98 2500 QC 12v NV4500 3. 54 LSD

 

[Archive]

Thank you Amsoilman, BigE, JJW_ND, & Bill Lins for your replies to my question.

Like you Bill since I live in the hot Texas climate and tow above the reccomended 18,000 lb. GCW limit, I'll try the 75W-140 and see how it works. Now I'm waiting for UPS to deliver my Mag-Hytec rear end cover.

Amsoilman, or Wayne, are you the one who writes in the TDR and came up with one of the original "mystery switches" for the 94 automatics? I was one of the guys who tried that and found out that the 97's were different. After studying the wiring diagrams, I figured out how the relay in the PCM worked so I still got your version to work by using the jumper wire. Thanks.

Bill


------------------
97,3500,CC,4x2, Auto, 4. 10, All Options incl Leather, PacBrake, 3 Pos Lockup Switch, PrimeLoc,80% Towing 12,000+LB 5th Wheel, Mag-Hytec Covers on the way!!

 

[Archive]

Bill,
Actually, my friend Russ Ward came up with the first "mystrey" switch that was written about in the TDR, back in issue # 11 Page 38.

He had sent in a schematic, but the schematic was ommited. I beleive in issue 12 or perhaps issue 13, the schematic was printed, but someone had changed the diagram a bit. I did help Russ on this, and yes, I have written several articles in the TDR.

I have been a member since the beginning.


Best regards,

Wayne
amsoilman

 

[Archive]

Amsoilman,

Thanks to you for the TC lockup switch and thanks to Russel Ward too. I think it was John Holmes(May Madness fame) who asked for the wiring diagram. (I haven't gone to my "TDR library" yet) You guys gave me the idea and made it easier for me to try and make a switch work for me.

I can tell you that the exhaust brake is just about useless without the lockup switch!!

I have a funny story about sending in my money and my wife's confidence about getting something for my $35 back in the early days of TDR. I'll tell it sometime. I have taken up enough space here for a while!!!

Bill

------------------
97,3500,CC,4x2, Auto, 4. 10, All Options incl Leather, PacBrake, 3 Pos Lockup Switch, PrimeLoc,80% Towing 12,000+LB 5th Wheel, Mag-Hytec Covers on the way!!

 

[Archive]

Bill- Let's hear it! We're always up for a good funny story!

------------------
Bill Lins Wharton, TX
98 2500 QC 12v NV4500 3. 54 LSD