What Level Of Primary Fluid In 2003 Hd 1450 Softail Youtube

A reader asks: "I'm looking to switch my Harley-Davidson Street Glide Special over to AMSOIL. Evidently the engine will take your synthetic 20W-50, but I'1000 curious about what to use in the primary and manual. There are a lot of dissimilar combinations put out at that place on the internet. Some use gear lube in the transmission and chaincase. Some even utilise ATF in chaincase and claim they have smashing results. What is the best combination for my bike?"

Answer: For any Harley Twin-Cam engine, nosotros highly recommend using AMSOIL Constructed 20W-l in "all 3 holes" (as they put it) for two essential reasons.

Update: AMSOIL now offers defended fluid for Harley Davidson primary chain-cases and transmissions. These are chosen AMSOIL V-Twin Primary Oil and AMSOIL 5-Twin Transmission Oil. Should one use these dedicated fluids? Or is AMSOIL V-Twin 20W-fifty acceptable for primary and transmission use? In that location truly is no wrong reply. AMSOIL V-Twin 20W-l is designed for engine, principal and manual apply. Information technology is certainly a highly competent and convenient pick for all 3 components. For those that adopt a specialized fluid, the V-Twin Primary and V-Twin Transmission Fluids volition certainly provide outstanding performance and protection.

Related: See All Of Our Articles On Harley-Davidson Motorcycles And Constructed Oil

AMSOIL Five-Twin 20W-fifty Works (and works very well indeed)

AMSOIL 20W-50 Synthetic Motorcycle Oil is specifically designed to withstand the rigors of engine, manual and primary chaincase utilize. Wait smooth, quiet shifting with maximum component life. Information technology is contains additives to prevent wear and the 100% synthetic base oil volition non shear downwards (thin out). Therefore, information technology will not get out manual or main components vulnerable to accelerated wear.

AMSOIL has secondary recommendations of AMSOIL Severe Gear 75W-110 for the transmission and Astringent Gear 75W-140 for the primary, only the company themselves volition tell yous that there is absolutely no upside to using gear oil in these components rather than the 20W-l. Some may think that they are using a thicker oil by using a gear lube. But call back that engine oils and gear lubes use unlike viscosity scales to prevent confusion.

What Virtually Gear Oil?

Let's expect at the actual viscosity numbers of AMSOIL 20W-l Motorcycle Oil and AMSOIL Astringent Gear 75W-90, 75W-110 and 75W-140. The manufacture standard for measuring viscosity is in "centistokes" at 100°C.

"MCV"AMSOIL 20W-50: 18.five
"SVG" Astringent Gear 75W-xc: 16.eight
"SVT" Astringent Gear 75W-110: 21.3
"SVO" Severe Gear 75W-140: 27.5

AMSOIL V-Twin Synthetic 20W-50 Motorcycle Oil As you can run across, the 20W-50 motorcycle oil is relatively shut to the 75W-110 in terms of actual viscosity. So those opting for a gear lube thinking that they are using thicker oil, really are not. Those using an 80W or 75W-90 in their transmissions are actually using a much thinner oil. The 20W-50 motorbike oil'due south viscosity is right in the "sweet spot" for optimum operation in all three holes and the volumes of positive reviews nosotros receive dorsum this up.

Gear lubes do contain heavy doses of "extreme pressure" additives which many believe prevent transmission wear and provide quieter operation. Over again, AMSOIL 20W-50 Motorcycle Oil is packed with additives specifically designed to prevent article of clothing in clutches, gears, chains and sprockets. There is absolutely no downside to going the 20W-50 route.

Some tout the use of automatic transmission fluid (ATF) in Harley primary chaincases. We do non recommend this option. Again, let's await at actual viscosity numbers to back this upwardly. The viscosity of a typical ATF at 100°C is 7.5 centistokes. Nosotros submit that ATF viscosity is far too thin for this application and call up that the risk of long term wear is far too keen. AMSOIL 20W-50 has a viscosity of 18.5 centistokes.

Convenience: Ane Effective Product For Everything

The second main reason that we recommend using 20W-l motorcycle oil in the engine, transmission and primary chaincase is that y'all can buy one product for everything. Therefore, y'all tin keep one production on paw and bring one oil forth on trips for top-ups. In conclusion, just does AMSOIL Constructed 20W-50 work exceptionally well in all three holes, it keeps things simple.

Source: https://www.oildepot.ca/correct-oil-harley-primary-transmission/

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