I have been running syn 3 in my 1985 flhtc for about 1500 miles. The man I bought it from used lucas syn 20w50. I am thinking about going back to dyno oil but have heard alot of mixed feelings about the switch back. I am open for all comments. Thanks yall! Pros and cons?

 

I've never run Syn, evos don't care.

 

FWIW, I've run the "ordinary" H-D 360 oil the entire time I've had my bike. I have 100,000 miles on my motor using it, and it runs like a champ. Good compression, minimal oil consumption and cool running. What else do you need?

 

I like motor oil in my motor. Lately it's been the Valvoline 20w50 V-twin, motor hasn't blown up yet, so it must be working.

 

Same here!!!

 

To answer your question, there is nothing wrong with going back to dino.

 

Thanks y'all! What y'all's fav dyno oil?

 

I've been using Castrol GTX 20-50 for 15 years. Never any trouble.

 

Get something with a high zinc content.

I went from syn to dino too and I like the dino better as the motor is quieter and cooler with the dino.

 

My friend's shop recommended Pennzoil 20w-50 as it doesn't stain up the motor.