What petrol do you put in your Harley?

**Finn** · 11th February 2008, 10:12

Bourbon. Gives it that throaty sound.

**MadDuck** · 13th February 2008, 15:21

Someone told me I have to remember not to put diesel in mine. Something to do with tractors....i have no idea what they meant

**Headbanger** · 13th February 2008, 16:15

Originally Posted by Patriot

When I scored my hog the biker told me to use 95 octane as he said it has more lead in the fuel to keep the chambers coated .Then another biker further down the road told me to use one part aviation fuel mixed with 91 octane.This he told me gives better performance.Also putting lead deposits back in the chamber.AV gas is costly so now I just run 91,then maybe once a while I'll run 95 or AV just to keep my bike happy.,,,,,LTR

AV gas is a waste of time unless its high compression motor, Has your engine had extensive work done on it?

Actually,never mind, If it had and you ran low octane fuel in it then it wouldn't be very healthy.

And there is no lead in 95.......

**FROSTY:Me** · 13th February 2008, 16:21

Actually the avgas comment regarding older harleys is a good one--Get some lead in there once in awhile.
Ok reread that--I mean AVgas has lead -our gpump gas doesn't -lead for Harlys longevity can be a good thing

**Headbanger** · 13th February 2008, 23:00

hmmm.....can any HD mechanics vouch for the need of the odd tank of leaded gas?

I would have thought whatever additives they put in NZ fuel to lubricate the engine in replace of the lead would do the job fine, Is this not the case?

**Kittyhawk** · 13th February 2008, 23:31

Diesel.....

**scumdog** · 14th February 2008, 06:14

Originally Posted by Headbanger

hmmm.....can any HD mechanics vouch for the need of the odd tank of leaded gas?

I would have thought whatever additives they put in NZ fuel to lubricate the engine in replace of the lead would do the job fine, Is this not the case?

Haven't put leaded/avgas or any other additive in any of my Harleys since unleaded first came in.

Mind you, I had already fitted my iron-head with stainless steel valves and hardened seats when I did the top end re-build.