I am going to install an S oil-cooler on my 2002 base and have the following question:
1) Can this be done without removing, or otherwise lifting, the intake runner?
2) How many O-rings will this require? The Porsche parts diagram I have access to lists the following O-rings:
- 999-707-409-40 RUBBER O-RING 2 $1.61
- 999-707-389-40 RUBBER O-RING 4 $0.66
- 999-707-344-40 RUBBER O-RING 4 $6.39
What is the really expensive O-ring for?
3) I will drain the cooling system prior to removing the oil-cooler. Can this be done without draining the engine oil? Does the engine oil automatically drain out of the cooler, or will it spill all over the engine upon removal?
4) What is the vacuum line connecting to the top of the oil-cooler?
TIA