22/04/2026
BMW X5 E70 50i in for our popular valve stem oil seal service.
This super rare X5 is powered by the incredible N63 engine. Unfortunately this particular engine is plagued by high oil consumption from the valve stem oil seals. Over time the excess heat generated by the “hot V” design causes the valve stem seals to harden, allowing oil to pass from the cylinder head in to the combustion chamber.
We are able to carry out this service without a full strip down of the engine, but due to the complexity of the engine it still requires removal from the chassis.
While the engine with front axle was removed we also carried out a few extra leak repairs.
Valve stem seals âś…
Rocker cover gaskets âś…
Breather hoses âś…
High pressure fuel pump gaskets âś…
Chain tensioner cover gaskets âś…
Lower sump gasket âś…
Upper sump gasket âś…
Rear main crank oil seal âś…
Engine oil and filter âś…