Noticed a small drop of oil from the rear of you engine?
The rear main oil seal is often the cause, but this normally overlooked
seal may be the reason.
Fitted to the inside lip on the flywheel, this easily replaced seal could be
the answer to your problem. It fits all T2 Splits, 1963–1967; 1600cc T2 Bay, 1967–1979
OEM part number 311 105 295 A