Plug gapping

[V10 MOJO]

plug gapping; whats the correct gap on plugs, im changing mine tommorrow and dealer vs parts store have two differnet answers. i want the correct and therefore the best answer. anyone ?

 

[JonB]

Assuming you bought OE Champions? Book Says .035


Better perf at .037 - .038 IF you faithfully change at 8k-10K.

Use .035 if you want to ATTEMPT 15k-20k


ps....why would 'the parts store' play a role here?
Now if your parts store was PartsRack..............
Thanks anyway !