Gear Oil in the Trans is Important
#31
10-13-2023, 04:37 PM
And some are so dense they don`t realize that the computer or phone re spells the word Mobil quite often.
Last edited by Dan89FLSTC; 10-13-2023 at 04:42 PM.
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#32
10-13-2023, 09:38 PM
What the ***** are YOU talking about there skippy? 1st, I didn't misspell ****. 2nd, I was referring to being able to buy Mobil 1, just like you were talking about........... 
And I'M dense, lol!
And I'M dense, lol!
#33
10-13-2023, 09:45 PM
Club Member
#38
10-14-2023, 07:23 AM
Seasoned HDF Member
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#39
10-14-2023, 03:49 PM
I have run Formula + and HD360 in all my bikes forever, as it does its job admirably...but, in my 2020 RGS I switched to the HD 80w140 in both primary and trans shortly after it came out, about 50,000 miles ago and I can't see myself ever choosing F+ over it, despite the price difference..I do my own fluid changes so that's a $ saver ... the 80/140 performance improvement is not a placebo effect, it's noticeably obvious .. recommend you could give it a try and see for yourself ... I switched to SYN3 in the engine about the same time after using HD360 exclusively on all my previous Harleys and I am so impressed how the entire powertrain functions / operates ...I hope to hit 100,000 miles in the next 18 months or so and would not be surprised if it gets there still without a single problem .. but also wouldn't shock me if something fails approaching 100K, which of course is certainly possible
He said in all his performance engines. That leaves your stock 80hp wonder out. Putzing down the hiway in your EPA compliant engine hardly qualifies as performance there mr. Fanboy..
#40
10-14-2023, 04:25 PM
Seasoned HDF Member
If more people understood this, we wouldn't need to talk about it so much:
The most common mistake is the belief that the viscosity of SAE 80W gear oil is much thicker than the viscosity of SAE 10W-40 motor oil. This is absolutely incorrect.
A 10W-40 motor oil’s viscosity is actually similar to the viscosity of 80W gear oil, and the viscosity of SAE 10W-30 is similar to 75W gear oil.
http://www.belray.com/bel-ray-engine...ces-explained/
The most common mistake is the belief that the viscosity of SAE 80W gear oil is much thicker than the viscosity of SAE 10W-40 motor oil. This is absolutely incorrect.
A 10W-40 motor oil’s viscosity is actually similar to the viscosity of 80W gear oil, and the viscosity of SAE 10W-30 is similar to 75W gear oil.
http://www.belray.com/bel-ray-engine...ces-explained/