i have had bad fuel in my 09 d22. Luckily i did have my Fuel Manager fuel watch system installed prior to this event and it caught it before i had to wear a massive bill. After this event happened i went to the 4wd show which happened to be a couple of weekends away and found a product called Fuel Doctor Additive. This can be picked up from Supercheap for about $14 for 250mls and from Queensland Diesel Spares for the bigger bottles. I use it in EVERY fuel fill and now also have been using it in my Honda EU20i Generator, blower, mower, line trimmer, ford fiesta and a few other things and have had 0% trouble with any of the gear. all gear runs perfectly and fuel stays fresher for alot longer.
So for the extra lil bit per tank i save my car from troubles with water, keeps the fuel system clean and lubricated and the filter catches the chunky bits. Long term gain and i would recommend it ot anyone.
I recently recommended the product to my Brother in law who owns a 07 Ford Escape and his wife commented on how smooth the car runs and feels now with this small additive in. It works and have thrown out all my other additive i have tried without success.
Rusty