[hr]
what about poor mans racing oil.

Anyone running delo or rotella fleet oils? That's what I run in the Chevelle. I'm currently running HD conventional oil, but would like to switch.

Noticed my HD service manual recommends fleet oil in an emergency.

 

Bottom line,

Use the correct weight oil

and

change it often.

Other than that its all about PERSONAL PREFERENCE

 

I like Mobil 1 it's good quality synthetic and you can buy it anywhere.If they don't have 20/50 Vtwin you can use 15/50 regular synthetic in the motor and primary and I use thier 75/90 gear oil in the transmission.

 

Back in the day I put a couple of tablespoons of industrial molybdenum disulfide (http://en.wikipedia.org/wiki/Molybdenum_disulfide) in the 4 speed of a '73 Shovelhead FX and never had a lick of tranny problems over 75K miles.
Not sure about the "modern" HD transmissions so I have not experimented yet. Any opinions out there for the new 5 or 6 speed transmissions and a couple of ounces of molybdenum disulfide?

 

I've used BMW oil on my Beemer for years, just getting into the Harley thing now, so I don't have THE most info on Harleys, but I've done alot of my own changes on the Beemer. The BMW oil is actually Spectro Golden semi-synthetic, I wouldn't hesitate to recommend Spectro oil. I think they have a V twin "blend" also. So if left to my own to chose, I'd reach for Spectro again in a heartbeat. I'm also very keen on Penzoil motor oil, sort of a family tradition there (my dad ran a gas station, back when they were actually about repairing cars rather then donuts, coffee, and cigs) and he liked Penzoil products and had good luck getting ,iles out an engine, back in the days when a car rolling 100,000 was kind of a big deal.
One of my best buds is a HD dealer service manager, so I'll listen to what he has to say about it, when the time comes.
Gilly

 

Spectro golden is fine for 5 speeds it is a Gl1 lube 100% sny, But for the 6 speeds Spectro Platinum 6 speed tranmission lube is the recommended one to use. It is a GL 5 100% sny

 

Yeah I was mainly referring to engine oil, but I did see Spectro has a special 6 Speed trans oil/lube.
Gilly

 

Amsoil MCV in the engine and primary, and Amsoil severe gere 75W90 in the trans. It will be so much better it will be like riding a different bike.