328 Oil Leak

I have an '88 328 with 35k miles. Went out for a drive today all on the highway at speeds up to about 95MPH. Guages all registered normal. Put it in the garage and noticed an oil leak from under the engine. It is a regular drip drip coming from the right side of the engine about 4 inches back from the jack point. The oil is very thin-thought it was water at first. I have Mobile One in the engine-50 W. It will be a while before I can jack up the car but thought that I would ask for comments/suggestions in

I've heard that synthetic oil is more prone to leak than dino oil.....

To close the loop on this the leak was of coolant and I am replacing the water pump.

Glad you found the cause.