. Meaning you should have replaced that when the battery sales were on...in Oct. Nov.
. My VW slug bug turned over the engine with 20W straight or with 10W30W and even with 30W straight.(but then it is 4 times the battery I have now.) and I am on a ski hill(so much colder if not equal to -40.
IF the engine does not crank over, then it is too cold to work anyways. Phone in sick.
Sin oil gets thick too. Use manufacturer's recommended(my other car takes5W-20 summer like winter according to owner's handbook. I am not going to guess the engineering of it. I look at the tiny battery and figure they know what they are talking about.
WOW!!! I did some research, and this question is a hot item!!
It's got opinions as heated and varied as 'are there really UFO's" or "Is Obama really killing America?" let's try and sort this out.
Some said there's no real difference.
Some said that some 0W oils are thicker than 5W at startup.
Some said that running the 0W oils will make engine run better at startup, but will cause engine to go bad 30% quicker, because of less oil thickness to protect engine.
Some said that OW oils are better than 5W all the time.
Some said you don't need 0W oils.
Some said you NEED 0W oils.
I tell ya, it's a madhouse out there!!
Let me summarize all this craziness:
for starting in sub-frozen temps like below zero, go ahead and use the 0W oils. Some have said that their cars ran smoother with 0W, even when driving normally, because of it being thinner.
But then, the people who thot thinner oil ruins car engine much sooner? Well, car engines go up to 250K miles which is pretty good, by that time, the rest of car (interior and exterior) will be rotting away first. So if 30% less, that means the engine will only go approx. 200K miles. Gee, I'm crying.....which means, no diff to us who like nice cars. You'd have gotten better car long before 150K miles. so no problemo.....
Overall, for those snuggly why-did-god-make-such-idiotic temps nights, go ahead and change to the 0W oils. Sounds like much better suited for such harsh temps.
And make sure you let car warm up at least 10 mins before driving, I'd go 15 mins at such 40 Below, let motor oil and tranny fluid get nice and hot before driving. You'll notice big diff.
And make sure your battery is good and new, because once you get the car started, the engine starts to warm up. If you're cranking and cranking, that's terrible for engine. So a fresh battery will provide good energy to get motor started soon as possible.
Hope this works out for you. I have 5W20 in my toyota Rav4, and Iowa had some of those 30, 40 below temps last winter, and car turned over okay. but the 0W should help you further north.
PS---Most people I read, recommend Mobil 1 oil synthetic, the 0W version oils seem to be highly rated.
Check your glove box manual for recommendations.I would also think about installing an inline coolant heater that you plug in at night.It would help the car or truck to start easier plus you would warm the interior of the vehicle quicker.Another trick that just requires a few plastic cables ties and a piece pf cardboard is to mount the cardboard in front of the radiator.Early Fords had a problem with oversized radiators which worked great in the summer to cool but were a complaint when winter's cold temps arrived.It works!
5W is it's start up temperature. How thick it is when cold. The other end 30 is it's normal operating temperature viscosity. So if you are that worried you can go 0w, although expensive because it's rare and only available in synthetic.
You should consider the temperatures you actually start at, not -40. (Although I guess an emergency could arise). The issue is turning over to start and initial flow. I think you could go either way. I would go with the 5w-30 since it gives you viscosity at the hot end. The owner's manual should decide.
Don't listen to these idiots. I grew up in southern Alberta and worked at an oil change shop in college. I know -40 first hand. I would use 5w30 synthetic or 0w30 synthetic. The viscosity of synthetic oil is much less affected by low temps than traditional oil.
NO. The vehicle manufacturer has taken various weather conditions into account and found that 5w-30 is adequate for all conditions. Using the lighter weight oils is NOT recommended, as they may not provide adequate lubrication for your engine once it is warmed up to normal operating temperature.
NO!! use 0w30 for winter. The 0W is the cold startup number. Going from a 30 weight to a 20 weight means less protection as thats a thinner oil once warm. I live in WI and use the best oil-Amsoil SSO 0W30 for my older Acura and 0w20 for my newer acura. For really great results, install a block heater or coolant jacket heater so your engine will be warm much faster and saves you money in gas.
What's the year make and model of your car? The specifications pages in the glove-compartment manual will tell you weather or not to use a lower viscosity oil in the Winter.
This much we do know: Which ever viscosity oil is appropriate, full synthetic oil will allow the motor to start easier in the Winter. It remains more fluid when it's cold.
My friend worked at the Ford proving grounds in AZ. He asked a petroluem engineer about using 0 weight oil for gas milage. The petroleum engineer stated "I wouldn't use 0 weight oil in anything I own.". Use a multiviscus oil no less than 5 weight.
The tolerances in modern engines, are very tight. The move to 5 weight oil was more for gas milage than anything else.
I live in AZ. The dealer changes the oil in my Hyundai. Although the manual staes use 5 weight oil, it is for gas milage. They use 10-30.
The statement the eingineer made"I wouldn't use 0 weight in anything I own." is something to think about.
What to do is get a shovel, bag of charcoal, and starter fluid, in the morning place some burning coals on the shovel and place it under the oil pan for about 10 or 20 minutes before you start it, it will start up like a nice warm summer day.
Yes. 0W-20 will make the car easier to start. The 5W-30 is recommended based on average conditions.
I would advise you to stick with the correct viscosity recommended in your owners manual, but use 100% Synthetic AMSOIL and AMSOIL Filter. AMSOIL is the finest 100% Synthetic Oil in the World it is made to withstand any extreme condition being cold or heat.
Petroleum based motor oil or synthetic lubricant? With the right synthetic you shouldn't need a block heater - just good antifreeze and synthetic in the engine and tranny.
I do 5w-20 dyno in the winter
Hi so if this is canada or alaska this might not be such a bad idea however when the engine gets really hot on a long journey parts will wear out faster.
Oil goes from 1 weight to 99 weight. There is no 0 weight oil. #1 deisel is 1 weight oil. All below that is a distillent like gas is and butaine. 99 weight would be heavy gear lube. Then above that you would be into tars.
Always use what the manufacturer recommends. If you believe that the circumstances call for something different, ask a technician who is certified to repair and maintain the particular vehicle in question.
You could, but then after the engine warms up you do not have the 30 wt protection anymore.
Use what the manufacture recommends. Don't try to second guess them because you might end up paying a high price. If you are worrying about your car starting install a block heater on it.
Your engine was designed for 0W-20. Don't second guess the engineers. Read this post about what happens if you use the wrong viscosity.
http://ricksfreeautorepairadvice.com/mot...
Call a dealer in your area that sells the brand of car you own and ask what kind of oil they would recommend if you brought it to them for an oil change.
I WORKED AT A FORD DEALERSHIP AND I DONT KNOW HOW MANY FORD RANGER ENGINES WE REPLACED WHEN SOME FOOL DECIDED HE WAS GOING TO PUT HIGHER VISCOSITY OIL IN THE ENGINE BECAUSE THATS WHAT THEY DID IN THE OLD DAYS, BY THE WAY IT WASNT COVERED UNDER WARRANTEE,TOO LOW IS JUST AS BAD YOUR MANUAL HAS THE TEMP RANGES AND VISCOSITIES RECOMMENDED I WOULD SUGGEST YOU ADHERE TO THEM.
But I don't know anything about cars.
follow recommendation in the service manual
I do not know?
