Is primary oil the same as transmission fluid?
Answer. Motor oil is for your vehicle’s engine. A couple of differences are the following: Motor oil is designed to deal with the products of combustion, whereas automatic transmission fluid (ATF) does not see contaminants from fuel burning. In an ATF, clutch friction is a very important consideration.
Which is the best oil for transmission and primary oil?
I just switched the Syn 3 and it seems to be the best its been for shifting smoothness. I just recently switched from Spectro’s synthetic heavy duty tranny oil to Royal Purple heavy duty tranny oil as well as Spectro’s primary oil to a Dex ATF fluid.
Can you put synthetic oil in primary oil?
Some guys will use 10w40 in the primary. I have heard that pouring a $13 bottle of synthetic in the primary is wasteful. I’m not sure about that, but the point is that the conditions that make synthetic beneficial don’t exist in the primary. There’s plenty of good reading on oils in this oil forum. I {Heart} Hookers.
Why does my transmission not go into first gear?
The transmission shifts up perfectly but at times when shifting down from 6th it doesn’t like to go into first gear. This doesn’t happen all the time but often enough that it is a concern. I am changing the transmission fluid to a full synthetic and am going to set the clutch cable again (was checked last fall). Any ideas as to a possible cause?
Which is the easiest Trans fluid to use?
Any primary fluid like Rev Tec, Drag Specialties, HD Formula +, Bel-Ray (it’s red like atf) that you can get the easiest is fine. Any trans fluid meeting the specs for these transmissions is fine. None of them will facilitate easier or quieter shifting despite what you read.
What kind of oil do you use for primary and transmission?
For those that prefer a specialized fluid, the V-Twin Primary and V-Twin Transmission Fluids will certainly provide outstanding performance and protection. AMSOIL 20W-50 Synthetic Motorcycle Oil is specifically designed to withstand the rigors of engine, transmission and primary chaincase use.
Any primary fluid like Rev Tec, Drag Specialties, HD Formula +, Bel-Ray (it’s red like atf) that you can get the easiest is fine. Any trans fluid meeting the specs for these transmissions is fine. None of them will facilitate easier or quieter shifting despite what you read.
The transmission shifts up perfectly but at times when shifting down from 6th it doesn’t like to go into first gear. This doesn’t happen all the time but often enough that it is a concern. I am changing the transmission fluid to a full synthetic and am going to set the clutch cable again (was checked last fall). Any ideas as to a possible cause?
Is it OK to use automatic transmission fluid in a Harley?
As for the use of automatic transmission fluid (ATF) in Harley primary chaincases, we have heard that some riders do this, but we do not recommend this option. Again, let’s look at actual viscosity numbers to back this up. The viscosity of a typical ATF at 100°C is 7.5 centistokes.