I pulled them and cleaned them by hand.
Cleaning the secondary valves took forever! I don't recommend it for the faint of heart.
Yes there is a big difference between the pro-gard and the real Techron. One's 100% Techron fuel additive and the other is around 20% and 80% filler.
I've never seen the cheaper stuff work well at all, but atleast it's not like most other base models or cheap brands and uses harmful fillers!!!
You'd be surprised what's on the market that will harm your engine!
