XK engine oil leaks
Symptoms
Oil weeps from cam covers, timing chain cover, sump gasket, and rear main seal. The engine bay is perpetually oily. Oil drips on the exhaust and creates smoke.
Cause
The XK engine uses old-style gaskets (cork, paper, and early-type lip seals) that deteriorate with age and heat cycling. The casting surfaces are rough by modern standards, making perfect sealing difficult.
Fix
Replace gaskets systematically.
Start with the cam covers (easy access, cheap gaskets), then the timing cover, then the sump.
The rear main seal requires gearbox removal, do it when the gearbox is out for any other reason.
Use modern gasket materials and sealants.
Accept that a slight weep is normal, aim for "no drips," not "factory fresh."
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