I have a Audi 4.2 V8 which has had a new oil pan (sump) gasket fitted. However, oil is still leaking over time and I wish to rectify this and fit another new gasket.

Is there anything I can add when fitting the gasket to make sure it seals properly?

All the oil pan bolts are tight so that is not the cause of the leak.

Using the correct gasket and more importanly the correct torque on the pan bolts will make it stop leaking.

Also the mating surfaces should be spotless and dry.

Simple fix man! Give me your 4.2l and in return I will give you my 3.6l! its leak free!

The oil pressure light and buzzer goes off in the car from time to time. I have found that I can make the oil pressure sensor go off by closing the bonnet on the car with a thud. As the bonnet is slammed closed the oil warning buzzer sounds. This makes me think that there is a faulty connection or printed circuit.

1. Am I right in thinking that there could be a faulty connection or printed circuit or could there be another oil sender on the engine which is faulty (if a vibration is something that can show up a fault in a sender)?

2. In terms of the electrical circuit where would the problems connections be in the Audi 100 (C3) and what should I look for?

The oil pressure light and buzzer goes off in the car from time to time. I have found that I can make the oil pressure sensor go off by closing the bonnet on the car with a thud. As the bonnet is slammed closed the oil warning buzzer sounds. This makes me think that there is a faulty connection or printed circuit.

1. Am I right in thinking that there could be a faulty connection or printed circuit or could there be another oil sender on the engine which is faulty (if a vibration is something that can show up a fault in a sender)?

2. In terms of the electrical circuit where would the problems connections be in the Audi 100 (C3) and what should I look for?