Does anyone know what the correct spark plug gap for a 98 V70R at 5900 ft elevation running 91 octane? The plugs I am going to use are Iridium NGK's thanks

 

Stick with the stock plugs which are NGK i think.Save your cash and stay with oe plugs.V70R's are fickle.How is the rest of your ignition system? How many miles?

 

My car runs and drive fine. But I am looking at picking up Gas mileage. my car only runs about 15 mpg. most of that is freeway driving. so a good tune up seems to be in order. Fuel filter, those iridium spark plugs, Ipd 8mm wire kit, having the fuel injectors cleaned and flowed, Flame trap kit, is what I am going to try. but I need to make sure the plugs I bought are gapped to what volvo suggests. so i need those specs