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some use a dry sump oiling system. This system requires the oil be pumped from a tank.

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Q: Why do harleys have an oil tank?
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What grade oil goes in tank under seat on 883 harley that mixes with the gas?

Harleys don't mix oil with their gas. Harleys have "dry sump" oil systems; instead of there being an oil pan in the engine, a Harley has an oil tank under the seat. The grade you want is 20W50.


Why does a harley Davidson motorcycle have an external oil tank?

Increase circulation and oil cooling. Not all Harleys have external tanks


Do you have to use Harley Davidson oil in Harleys?

No.


Why is there oil around your harleys carburetor?

the crankcase vents through the breather system.


What causes oil blow back on harleys?

Typically its either worn or broken Piston compression rings.


Diagram of oil lines on 1973 superglide?

on all Harleys prior to the twin-cam the oil pump has two lines attached.the one closest to the outside is always feed to the oil pump and it attaches to one of two stubs at the bottom of the oil tank. The other line that attaches to the oil pump is the return, and unless it routes to and through an oil cooler, it goes to the top of the tank, next to the large round cap under the seat. the other stub underthe tank is the breather line and it goes to the nipple just above the oil pump. Another nipple pokes out behind the oil pump. It goes to an end breather filter, or to oilt the rear chain.


How do you read oil tank gauge?

to read a oil tank you have to get a oil stick that its long and then put it in the oil tank


Why does oil come out of oil tank of motocycle?

The oil pump moves the oil from the tank through the engine and filter and returns it to the tank the way the heart circulates blood.


Can oil ruin your gas tank?

Some truckers use the oil from an oil change as added fuel in the tank. In this case it will Not ruin your tank


What are clues of an oil tank buried outside?

No oil tank inside the house.


How do you measure oil in a underground oil tank?

It depends on experience of different oil tank removal company.


What is the best oil cooler for your 2005 electra glide?

When does an oil cooler work? When air is blowing through it. When is the oil too hot? When it is idling in heavy traffic. That is the reason HD doesn't install oil coolers on Harleys, though they will sell anything that you will buy, as that is the business they are in.