Rear Radiatior ISB Oil Fill

[Agpopp]

With all the room they had, they really made to difficult to add oil. I did a lube, oil, filter and was worried for a minute I wouldn't be able to get oil back in this hog. Luckily had a piece of 5/8 rad hose and it fit my funnel perfectly.

[Jim McGarvie]

I've always added oil through the oil cap on top of the valve cover. Much easier, in my opinion.

[96 EVO]

I bought one of those 5gal pail lids with hand pump. No chance of making a mess!

Two beers worth of pumping, and I'm done!

[Rick A]

I fill from the bedroom engine hatch which is directly over the oil filler. Just prepare and use the right funnel and have a helper hold it in place. Just be diligent and careful! 

[LakeBob]

I keep one of these onboard, very useful and they work amazingly well for the cost.  
 

https://www.harborfreight.com/battery-operated-liquid-transfer-pump-63847.html

[cbr046]

This funnel screws into the top valve cover for a solid mount and makes it much easier to pour from the bedroom hatch.  No holding helper necessary. 

https://www.amazon.com/gp/product/B000P0VTC8/

- bob

[Agpopp]

Thanks for the replies gentlemen! For me though,  I think the free piece of heater hose and funnel I own still beat buying more stuff or dragging 4 gallons of oil into the bedroom. 

[scottknight]

Hello 

My 05 Knight rear oil fill tube can be pulled out about 8 inches, I discovered the tube slides out and I tether the funnel to the ladder . The 5 gallon oil pail is just enough to handle for me on a short step ladder. My oil fill is 6 gallon  (8.3).