Hello- coming out of a brutal cold spell here with temps well below 0 F most of the time. I have been driving my winter car mostly because of the snow. I tried jumping the battery, doesn't seem to be the problem since it wants to turn over. I suspect it may be the fuel line, as today was in the 20's F and it almost went.
I must say, I'm a little disappointed, I've lived here for over 20 years and never had this cold weather start problem in the past Volkswagens and Toyota's or the Subaru I now own. The only dead battery I've had was on a Toyota with over 140,000 Mi, and it was the original. I am partially at fault, as I didn't get any dry gas in it before the cold came. Any thoughts?
...Is not always just that, but if it is then there are some "home remedies"...
1) 1/4 bottle of 100% Isopropyl Alchohol in an empty tank before filling up... no more than that or possible damage to seals and lines can occur... Fill up your tank completely to the brim "on top of this" and it will mix properly and cause no harm... but it will darn sure dry any water or condensation in your fuel and tank. I hope that you are only using premium grade fuel. There is also a product at the auto parts stores which does the same drying action... I do not remember the name however... I always use the above.
2) Put (dangle) a 60 watt light fixture (with bulb lit of course) in the engine compartment overnight... making certain that it does not come directly in contact with any vital component. It will build enough radiated and residual heat to prevent freezing up under the hood. I used this method in Connecticutt and Colorado in the dead of winter with great success. Cold starting Audi (Conn. & Colorado) as well as Maserati Merak (Colorado) cranked up every time flawlessly...
3) Try to use 0w30w Mobile 1 motor oil or even the 0w40w Mobil 1. Orange container Castrol 0w30w synthetic (made in Germany) is also quite good. You can get all of these at Auto Zone. They are the only store that carries the German Castrol. Any of these oils will improve cold starts dramatically, and they flow at the same rate as each other despite what others on the forum may say. I know this through experience and a vast practical knowledge base. Check out www.bobistheoilguy.com for tips on motor oils. Very helpful. He advocates that you NEVER should use additives in the oil. If you do... you need to stop immediately. It undermines proper oiling of the top end of your engine.
4) As stated in this thread... "there may be something else going on here"... If the remedies above do not help your starting problem then defer it to the dealer asap.
Best of luck and I hope you figure it out painlessly and soon !!!
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