stuttgart911

Folks,

I need your advice. My 964 leaks a little. I recently had a good amount of the oil lines redone. I still have leaks. My two mechanics advise me to get this thing cleaned up so we can figure out where all the leaks are coming from.

Can I power wash any of it? What can't get wet? Do I need to lift the car to do it? If so, how much?

I tried to search - general feedback was use degreaser, purple power, simple green. I feel like that will take forever by hand and I don't have full access.

P-daddy

It's tough if you only have curb side parking in DC. If you have your own parking area, I'd put the rear on jack stands then hit it with several cans of engine degreaser, purple stuff, and/or brake cleaner. Rinse with low pressure water hose. Caked on oil may require some elbow grease with an assortment of brush sizes to git er done.

Rocket Rob

+1 - Put the car up on jack stands, spray with your favorite degreaser (I use Simple Green), let soak and then blast with water. It make take multiple cycles to get it off. I then use brake clean to get the stubborn stuff. You will be amazed at what an hour or two of work can do to clean the bottom of the car/engine.

ZG862

You don't really describe the rate at which you're losing oil but it came across as more than a weeping gasket.

Dunno what your local roads are like but if your 964 has had too much exposure to road salt then certain oil lines are quite vulnerable to corrosion and as they fail will cause alarming leaks. Check out the return line from the RH side of the crank case, which turns upwards on to a hose and then to the flattened tube that runs along the lower edge of the inner wheel arch to another short hose to the tank. In such conditions, the tank itself is vulnerable to corrosion on its outboard and forward sides, and small perforations in this are likely to result in a build up of gunk all over the thermostat.
Equally, the oil line between crankcase and filter may fail and lead to a high oil loss. Corroded hose clips may also be the root cause of loss where the hoses attach to hard lines.

Good luck with your cleaning and go carefully as if you enlarge a pin hole, you could cause uncontainable loss of much of the oil in the system and have an immobile car. Replacing some of the hard lines requires some big spanners. On the other hand, the issue may be small and easily fixed but just wanted to make sure you're prepared.

Z

mikey_audiogeek

Get a UV flashlight. Fresh oil fluoresces under UV, old oil doesn't.
Cheers,
Mike

Goughary

If you don't have engine trays, you can go to a local body shop and have it steam cleaned or pressure washed. Should cost approx 150...and that get 95% of the oil under the motor. Then for the top, the simple green and hose and an old paint brush will do the trick...