cost too much patrol

[PlatinumOcean]

my car is 10 years old 318is coupe, auto, and my friends is 316 manual, same year with mine. my patrol cost as twice as his, i think that's really too much. Do you think I can add any addtive with patrol, to save money?

Thank u very much

[bitcore]

316? I didn't know they made one that small.
how much it costs to fill up your tank depends on how you drive the car, size of gas tank, and efficency of the engine.

[CiscoKid]

europe... 316

[PlatinumOcean]

I mean, is there any additive can use to low the cost? May be some additive can mix with patrol?

[PlatinumOcean]

heh, yes, I am in europ.

[bitcore]

I think if there is one, the gains you get on fuel economy will be spent on the fuel additive.
Try some injector cleaner additive, might help in the long run.