What do you really think Fuel system cleaners are for?

I'm a sceptic when it comes to matters of faith. I have been running a bottle SL1 through my tank before evey oil change for many years. I've never used a maintenance dose. I've never had noticable problems with fuel injectors. Whether that's because or despite my use of SL1 I do not know.
 
I feel my car is faster after it's washed....does not make it an accurate statement.
Doesn't mean much to me if you like it or not. I have an older vehicle, over 300K, and I feel it accelerating a lot easier. Tell you what, come over some Saturday, and I'll give you a bottle.
 
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