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there are sevral kinds of additive that work for different purperts:
5 s( k+ {- o4 ^, M' S# Z8 C3 E1 injector cleaner will clean the injector, if your car has high mileage, you can try it.
6 [8 _& \2 o0 k2 fuel system cleanner, for older cars
7 Q4 o- R! N2 g6 I- `% I4 Y) D! ^3 octan enhancer, to increase octan value of fuel, you can use it all the time; T9 v2 n1 z" C% l
4 fuel stablizer
; e' z$ ~' j7 z' |# [; \5 fuel water condenser, to remove water in your fuel tank |
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