I have been using Mobil 1 V-Twin 20-50 synthetic oil in my 2010 FatBoy Lo since I first purchased this bike, as it is getting harder to find the Mobil1 oil I wondering if anyone has used Penrite Synthetic oil in their Harley.

http://www.gllubricants.com/index.php?c=dictionary&a=list

PENRITE.
use it in my Night Rod, excellent!

Penrite 20-60 hpr diesel.

I will be trying Penrite 20-60 hpr diesel oil on my next oil change, my mate who sold me the bike had just changed the oil and used the Harley brand oil which I must admit I not real keen on it's seems to me to be a very thin oil when it get's hot, maybe it's just me when it comes to oils but I think Penrite will be the go for me from now on.

Don't forget Hpr diesel 15-50 which is a semi syn.

For those interested, if you buy this oil, Penrite HPR 20w-60 from supercheap auto on line E-bay shop, you get and additional 10% off when you checkout by using the code CPICKUP. You only have to nominate a shop and pick it up from there.
I just bought a 10 litre drum listed at $71.88 and got it for $64.69. Thats pretty good value. Offer finishes 22nd december blokes. Get to it now!

Is there a difference between oil used in air cooled engines and water cooled.

Yes there is a difference...BUT lets ignore that vital bit of info as it just confuses things.

Yep an old thread but i am just catching up on all this. Ok my understanding is the diesel oil has cleaning additives for removing the sulfur that left after ignition (or something of this nature).So we can drop the oil in the engine of the bikes? 2010 road king with stage V kit on. Just need to understand if this is correct as i am on the understanding the desil oil is just for that. Correct me if i am wrong with some sound information and would appreciate being informed. 

short good article to which i can say i am informed. Thank you speedzter for your time and efforts most appreciated 

Nothing wrong with using Motorcycle oil for Motorcycles (though nothing wrong with the correct grade diesel oil in engine only),Yes Penrite do a large range of this M/C oil in 20w-50(& other grades) designed for V-twins in both synthetic and mineral, best of all you can by it with up to 30% off at Supercheap, personally my wideglide seem to run both cooler and quieter on Penrite syn than with HD's SE Syn 3 oil

Its just SO godamn confusing.....I just use Harley oil and a Harley oil filter EVERY 5,000km (and thats the real secret here - regular oil changes, so ZERO value in using an oil that will last 15,000km between changes.)

That's it in a nutshell T. Deuce every 5 (now 110k), Ultra Every 8 (now 32k)

I have been using Lucas oil for many years on various bikes and find it great.

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