I agree that additives like Power Service are cheap insurance. On the other hand, in over 30 years of daily diesel use without additives, including Michigan winters, I never had a fuel problem until last year when the temps were minus 24 below. Twice I experienced fuel gelling. Acted just like a dirty fuel filter. Truck would run but had no power and would struggle to go 25 mph. Luckily I keep a can of Diesel 911 on board. Added that and 5 minutes later all was well. I still don't use additives as a regular practice, but I will always have 911 on hand in the winter. Just in case. Good luck.
I live a bit south of you, just below Hot Springs, Ark and normally don't use any additives. Last time an artic air blast came thru and dropped temps to 17F, I put in some anti-gell agent for the first time. I haven't ever had an algae problem or water problem and don't know that I would have had a gelling problem but it was cheap insurance at the time.My B2320 won't see much use at all during the winter months. Do I need to add anything to the fuel?
This thread got me to thinking, researching diesel additives. This study http://www.dieselplace.com/forum/at...ssion-copy-diesel-fuel-additive-version-3.pdf has me considering changing to Opti-Lube XTD. The Marvel Mystery Oil I have been adding to my fuel might really be degrading the lubricity.