Can I use 75w90 in my Harley transmission?
It will be just fine in the trans. I would recommend using gear oil in there over motor oil. I run amsoil v-twin transmission oil in my bike.
Can you use gear oil in Harley transmission?
Our answer: It is perfectly acceptable to use 75W-140 gear oil in Harley-Davidson transmissions.
What weight is Harley primary oil?
Answer. You actually have a couple of choices for the primary drive. The optimum product would be Mobil 1 Racing™ 4T 10W-40 motorcycle oil, but it is also okay to use Mobil 1™ V-Twin 20W-50.
Can you use 20W-50 in Harley transmission?
A particularly nice feature about AMSOIL 20W-50 Synthetic Motorcycle Oil is that it can be used in the engine, transmission and primary chaincase of Harley-Davidson motorcycles.
What can I use in my Harley transmission?
Answer: For any Harley Twin-Cam engine, we highly recommend using AMSOIL Synthetic 20W-50 in “all three holes” (as they put it) for two essential reasons. Update: AMSOIL now offers dedicated fluid for Harley Davidson primary chain-cases and transmissions.
Can you use synthetic oil in Harley primary?
There will not be any problems whatsoever. Synthetic and conventional oil can be substituted back and forth without any compatibly issues or mechanical risks. This holds true for engine, primary chain case or transmission oils. However, we suggest that you give the synthetic oil a try before draining it.
Is it OK to use 75W90 instead of 75w85?
Our answer: Yes, 75W-85 gear oil can most definitely be replaced by 75W-90.
Can you use motor oil in Harley primary?
You actually have a couple of choices for the primary drive. The optimum product would be Mobil 1 Racing™ 4T 10W-40 motorcycle oil, but it is also okay to use Mobil 1™ V-Twin 20W-50.
Can I use 20w50 in my Harley transmission?
What is the difference between 75 90 and 80 90 gear oil?
SAE 75W-90 maintains a more consistent thickness, or viscosity, across a wide temperature range. It’s thicker when exposed to high heat and thinner under colder, wintry conditions than 80W-90. The use of 75W-90 gear oil is recognized by OEMs as a contributor to overall fuel economy.
Can I use 20W50 in my Harley transmission?
What viscosity is Harley-Davidson primary oil?
The 20W-50 motorcycle oil’s viscosity is right in the “sweet spot” for optimum operation in all three holes and the volumes of positive reviews we receive back this up. Gear lubes do contain heavy doses of “extreme pressure” additives which many believe prevent transmission wear and provide quieter operation.