IS OUR BIODIESEL OKAY FOR COLD TEMPS?

THE SHORT ANSWER IS:  YES

THIS FUEL SHOULD BE JUST FINE DOWN TO:  30 DEG. F

STARTING NEXT WEEK THE FUEL SHOULD BE GOOD DOWN TO:  25 DEG. F

THE LONG ANSWER IS BELOW

 

Inga at Alpental
Dr. Dan’s trusty Volvo 240 Diesel regularly spends the night at Snoqualmie pass during the winter and runs on fuel from Dr. Dan’s pumps

It is important to remember that 24-hour average temperature is usually what to take into consideration. When you drive your car regularly or it warms up enough during the day it is far less likely you will have problems.

Adding a mix of petroleum diesel and winter additives to your fuel will reduce the gelling temperature and reduce the risk of your having problems.  Keep in mind that a typical Seattle winter does not typically see cold enough weather for long enough for there to be serious issues with this method.

It is always good advice to keep track of temperatures during cold snaps, if you park your car outside for any long periods of time and use B99/100.  One trick is to keep a small sample in a re-used plastic drink bottle inside your car.  If the small sample has gelled, chances are the fuel in the tank has too.

Some B99 users have problems with running a blend during the winter, and this is mainly a problem due to using dirty petroleum diesel.  DON’T BUY DIRTY DIESEL!

The chemistry of biodiesel can be complicated, and there are no hard and fast rules when it comes to cloud points and cold-start capabilities.  Where one user may experience drop-out and a clogged filter, the next may have not an ounce of trouble.  As always, If it is going to be well below freezing for an extended period of time where you keep your car, take appropriate action.

Mind your mix and watch the temperatures!

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