I had a 1985 Ford E350 with a 6.9L diesel where the oil pressure dropped to zero after I slowed to get on an off ramp with a line of cars. I had added a Banks turbo.
I found two other oils that kept the pressure up under the same conditions.
Now I'm faced with a similar situation with a 2001 Chevrolet S10 Blazer (4.3L auto) where at higher heat loads the oil pressure drops.
Other than buy and try is there any way to know in advance which oils will withstand high speed operation? I'm currently using Mobil-1 10w30.
I found two other oils that kept the pressure up under the same conditions.
Now I'm faced with a similar situation with a 2001 Chevrolet S10 Blazer (4.3L auto) where at higher heat loads the oil pressure drops.
Other than buy and try is there any way to know in advance which oils will withstand high speed operation? I'm currently using Mobil-1 10w30.