So I'm currently in process of fitting a second oil cooler, which came with fittings for -8AN hose.

So I'm rerouting the hose from the Front iron to the right-hand cooler then back to the left-hand cooler and back to the engine as normal.

The Factory lines seem to be larger than the -8AN the second one had fitted . Will I encounter problems having small hoses ? The only one left with the larger size is the one returning to the Rear of the motor.

Thank in advance

 

Typically you run -10, I don't see an issue running -8 but might have slightly higher oil pressure and you won't be moving as much volume.

 

I only use -10