I've been scoffed at for putting Platinum +4 Bosch plugs in our 98 Altima. The fuel economy increased by about 1.7ish MPG when they were added. Now 40,000 miles late and it is still maintaining most of the increase. Last I checked it has dropped off about .3 mpg. It now shows 132,000 on the Odometer too, so it's not a new or low mileage car. I'm sold... I will admit I think the +2 plugs would do equally well. i doubt the need for 4 grounds. I only bought them as they had a rebate bringing the price back to basic platinum Bosch plugs, Plus I wanted to see if they did anything at all!!! So far, so good! -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 " I was different before people dared to be different" -------------- Original message ---------------------- From: "Jim Blair" <carnuck@xxxxxxxxxxx> > PS: There has been a slight increase in power (closer to original output) by > seat of the pants and without even changing out my oil soaked airfilter. > > _________________________________________________________________ > http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migration_HM > _mini_pcmag_0507 > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list