Here are some potential causes, ranging from minor to major:
Minor (and hopefully the cause):
* Valve cover gasket leak: This is a common and relatively inexpensive fix. Oil seeps from the top of the engine.
* Oil pan gasket leak: Another fairly common and manageable repair, leaking from the bottom of the engine.
* Rear main seal leak: This is more labor-intensive but still not necessarily catastrophic. It leaks from the rear of the crankshaft where it meets the transmission. This is more likely with low mileage cars that have sat for long periods.
More Serious (requires immediate attention):
* Cracked engine block or head: This is a major problem requiring significant repair or replacement. Leaks would likely be more significant than "small spots."
* Failing oil pump: While unlikely to show up as just small spots, a failing oil pump is extremely serious and can lead to catastrophic engine failure. Check your oil pressure.
* Internal engine leak: Something internal, like a cracked piston or worn rings, could be leaking oil into the combustion chamber (leading to blue smoke) or elsewhere inside the engine. This would be likely to show up with more than just small oil spots.
What to do:
1. Determine the location of the leak(s). Clean the engine thoroughly, then run the car for a short time. Carefully examine the engine afterward to pinpoint where the oil is coming from. Take photos.
2. Check your oil level regularly. A significant drop in oil level indicates a larger problem.
3. Check your oil pressure. Low oil pressure suggests a serious problem with the oil pump or lubrication system.
4. Consult a mechanic specializing in classic cars. They'll have experience with these engines and will be able to properly diagnose the problem. Trying to fix it yourself without the proper experience could make things worse.
Given the age and low mileage, a thorough inspection by a qualified mechanic is highly recommended to avoid potential damage and expensive repairs down the line. Don't drive the car extensively until you have it checked out. The low mileage suggests that many of the engine's seals and gaskets may be brittle with age, making them more prone to leaking than in a higher-mileage engine.
