Oil light

[allerston]

Castrol gtx 20 50

[Blitzkrieg Bob]

Castrol gtx 20 50

Well, seems the right weight, so I would do as suggested at test it with a proper guage, then if all is well, maybe replace the sender and see if it was just lazy.

[ArnZ!]

yeah it would be best to see the pressure with a real gauge. and then go from there. 450,000kms is already a lot of kms.

[allerston]

I was told by a friend that if i fill some oil in the oil filter and in the oil filter housing it will solve the problem he said that mayb there is air trapped in the tube is this true

[bsell]

I thought there was an anti-drainback valve in the oil filter assy...if that was stuck open, then the oil filter housing would be dry in the mornings and cause a long oil light on condition.

I looked on RealOEM and couldn't find a description for an anti-drainback valve. If memory serves, there have been discussions on this site about this issue.

Brian

[allerston]

Yes there is a anti drainback valve but is it a good idea to put oil in the filter before replacing the filter what is meant by prime the oil filter i read that.:-)

[Russell]

Don't think the filter has a drainback valve. However, I believe there is one in teh filter housing assembly.

[Tiger]

I only know of the one in V8... Our E34 has a valve built in right into the filter. They later changed that in later model V8... with a black plastic valve... that can be retrofitted into early V8 engine... you simply push it in and use the later model filters.

[Tiger]

Allerston engine use spin on filters... no alternative. Install a oil pressure gauge to read the actual pressur and then decide what you want to do.

[ArnZ!]

the m20 uses a spin on filter. no filter housing here.