Vehicle in question is an '02 wrangler 4.0, 5sp manual.
It's not my car, just in charge of the maintenance. The driver drives really spiritedly all the time. High revs, high load even with a cold motor. UOA looked good despite this. However... What all can I do to aid in protecting the engine? Or is there really nothing besides good oil?
On there is an oversized amsoil filter. Stock oil pump with stock bypass valve. 99% of the time it gets some sort of 5w-30 synthetic. Depends on what's in stock at the time.
Uhhh... Trying to think. Anything else I could do? Possibly a 0w-40 oil? "spiking" oil with measured amounts of ZDDP and MoS2?
I just did an oil pan gasket and rear main seal on this vehicle, and although the UOA looked fine, I noticed that the main bearing caps had some light scoring. Bearing thickness is still within spec, and no noises to speak of on this engine. But the fact that it's there just doesn't quite sit right with me. Granted the vehicle was purchased used and previous maintenance history is unknown.... Bit still.....
It's not my car, just in charge of the maintenance. The driver drives really spiritedly all the time. High revs, high load even with a cold motor. UOA looked good despite this. However... What all can I do to aid in protecting the engine? Or is there really nothing besides good oil?
On there is an oversized amsoil filter. Stock oil pump with stock bypass valve. 99% of the time it gets some sort of 5w-30 synthetic. Depends on what's in stock at the time.
Uhhh... Trying to think. Anything else I could do? Possibly a 0w-40 oil? "spiking" oil with measured amounts of ZDDP and MoS2?
I just did an oil pan gasket and rear main seal on this vehicle, and although the UOA looked fine, I noticed that the main bearing caps had some light scoring. Bearing thickness is still within spec, and no noises to speak of on this engine. But the fact that it's there just doesn't quite sit right with me. Granted the vehicle was purchased used and previous maintenance history is unknown.... Bit still.....