its fuel... fuel oil is for furnaces.. same thing


when you removed the spin on did you take the big banjo bolt out as well? it has a copper washer that goes between that and the housing

Ideally, the copper washers should be replaced every time you change the filter.

Your reciprocating piston, compression auto-ignition, diesel engine burns a specific fractional distillate of hydrocarbon mixture fuel oil (mostly petroleum) ranging from C10H20 to C15H28.

Since the engine is an OM61X which means 'Oil Motor', it is technically correct to call the fuel 'oil'. There's diesel motor oil and diesel fuel oil. The first goes in the crankcase and the second the fuel tank. Putting the second in place of the first will cause more problems than putting the first in place of the second.

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1977 300d 70k--sold 08
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Ideally yes, but who does? I don't have a spare so I just anneal it and sand it.. works fine every time



might I say my old filter was coated in a nice film of black diesel fuel oil stuff... as well as my clear filter.. which I thought was clogged but it was the fuel... time for some biocide.

The crush washer is used on some engines. One of mine did, I went to the local hardware store, and got a composite washer, no more leak. Just remove bolt, and slip on washer.

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83 SD

84 CD

big banjo bolt = what screws into the top of the filter, yeah?

I did, took it all the way out, but didn't notice a washer anywhere.

I'll look again tomorrow, though -- I plan to remove and re-tighten and stuff.

Does that bolt need to be oriented in a certain manner, like, does it have a way it has to point in order to flow correctly?

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1983 Mercedes-Benz 240D
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