jesimmers

I have an autometer phantom mechanical op gauge, on cold startup I have exactly 80psi. When fully warmed up it like 12-14 at idle, and 30-35 cruising at 3k rpms.....it just dont seem right. Any input is greatly appreciated!

Padawan

That seems about right. What kind of oil do you use?

jesimmers

Castrol gtx 10-30, also acl bearings, and its a y7 with a z6 pump

Padawan

I'd switch to 5W-30 (the recommended viscosity), but otherwise it seems fine.

jesimmers

I always thought thinner oil lowered pressure(not sure just what I have heard)and not that am going to but but doesn't acl recommend 20w-50?

Padawan

The 5W-30 would only be thinner at start-up, which should indeed bring down the pressure a bit when the engine is cold. Honda recommends 5W-30 as the preferred viscosity for all temperatures and climates.