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Transmission Oil

Softail Models

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Old Jul 30th, 2010, 03:04 PM     #11
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Re: Transmission Oil

Quote: Originally Posted by mnultra View Post
Hoop.....He's referring to gear oil, not engine. It would still hurt as I would need about 4 quarts for the truck, but not quite as bad.
Oops, your right. I guess I will have to save that post for about 4-5 years down the road. Maybe then engine oil will be $18 a quart.

At these rates, heck some day it may be cheaper to replace the bearings than the oil.
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Old Jul 30th, 2010, 07:17 PM     #12
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Re: Transmission Oil

Quote: Originally Posted by Hoople View Post
But the OP did not say it was Spectro 6 speed. He said "Beside it was one for $17.95 that said it was for SUV" which I understood at a Mobile 1 oil for SUV.

That did not make sense to me. Spectro I know runs $18/quart,, just never knew of a mobil1 SUV @ that price.

May be the way I read the original post.
I was looking at Mobil 1 trans oil at a Auto Zone last month. They had 75w90 for about $10, and right next to it was Mobil1 75w140 for $17 (I didn't notice if it said SUV). I just thought they had made a price mistake between the 2. I wasn't buying, just looking so I didn't ask why.
Now I'm gonna have to stop in another Zone and see why there is such a big $ diff. between the two.
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Old Jul 31st, 2010, 08:53 AM     #13
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I'm going to ride back over there today and ask them what the difference is. I will let you all know what I find out.

--------------------------------------------------------------------------

OK, here's the deal. The $18 oil is 75W140, and the cheaper oil is 75W90. Can you guys advise me on which one to use. I came home empty handed.
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Old Jul 31st, 2010, 02:01 PM     #14
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Re: Transmission Oil

Either one will do the job well and is determined by the temps where you ride.

The Spectro would be a better choice. I went from the M1 gear oil to spectro and it's a bettet choice IMO.
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Old Jul 31st, 2010, 02:16 PM     #15
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Re: Transmission Oil

Quote: Originally Posted by orourcs View Post
OK, here's the deal. The $18 oil is 75W140, and the cheaper oil is 75W90. Can you guys advise me on which one to use. I came home empty handed.
I'm using Mobil1 75/90 in my '07 and it seems to be doing the job. I still wonder why the big price difference. Mobil 1 20W50 isn't more than 10W30.
I know trans. oils are graded on a different scale, now I got something else to google.
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Old Aug 1st, 2010, 02:22 PM     #16
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Re: Transmission Oil

I just replaced the transmission oil in my 03 Fatboy with Redline Shockproof Heavy. What a difference it makes. I wished I had done this sooner.
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Old Aug 1st, 2010, 05:04 PM     #17
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Re: Transmission Oil

I have used spectro and have been using lucas 85-140 little stiff in the am first shift but after that like butter and i think the trans is quieter than with the spectro ..

Gonna try another brand here shortly that is full synth to see how it is
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