Ya want clean injectors, use Premium more often. Premium is somewhat less oily and burns much easier & hotter for the engine. The result, a smother running engine and a little better fuel economy.
I tell you what, I had a pinging in my 98 Conti. I now use premium every other fillup, And every other I use plus (89). But I stumbled on a sunnoco with 100 octane in Jersey & 94 Octane. I put about 2 gallons of one 100, and the rest 94. Then I put in in a good injector cleaner. Jeeze , it worked wonders. Took away the ping, the car flew and it retored my gas mileage.
My 98 though uses alot of gas when I do use 89. If the difference is 5, 10 cents I stick with premium cuz in the long run, It might be just $1.80 in difference & I will have a better running car and in help out keeping the injectors clean. In addition, I use the cleaner after every oil change, dunno about wasting money but I notice the difference. Just do'nt waste your money on them 99 cent cleaners like you can get at walmart, don't really feel any result with those kinds.
