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What weight of oil is best for summer use in Iowa

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5W-40 is what the manufacture calls for. The heat out side will not make a difference since the engine's temperature is moderated by the cooling system. If you use synthetic oil, you can go with out changing from 25,000 miles to 17,000 miles or 1 year but you do have to replace the oil filter every 7,500 miles to 5,000 miles. For conventional oil it calls for oil and filter change every 5,000 miles or 4 months which ever comes first. Hope this helps. keep me posted be glad to answer more questions. 

Posted on Jun 25, 2009

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Posted on Jan 02, 2017

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What weight oil to use in the summer in a 2003 pontiac grand am


heavier oils are fine in warm summer months, 10W30 or 10W40-
all cars ran on these oils summer or winter for years. Newer vehicles are designed for 5W oils and you should use a 5W oil for them in the winter months

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What grade oil does 2004 jeep grand cherokee special edition take


Most likely 5W-30. The W is for winter. The numbers tell summer and winter. A quart of this oil will act like 5 weight (very thin) in the winter and 30 weight in the summer (thicker). Let's not go in to how that is done.
If you live up north, a 5W-20 would do well also. Down south 10W-30 is often used.

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1 Answer

I drive a 2002 eclipse 4cyl 2.4l, i live in texas and the summer weather is 100+ degrees and winter is between 30-70degrees, what oil would be best for summer driving and winter drving i just bought 10w 40...


here is a good article explaining the differences between them...the lower the "W" number the quicker it lubricates your engine in cold weather...check the article out. http://www.upmpg.com/tech_articles/motoroil_viscosity/

Hope this helps you!

Jun 24, 2012 | Cars & Trucks

2 Answers

What kind of oil does it take


In the summer it's best to use a heavier weight than you do in the winter. I usually use 10w/30 or 10w/40 in the summer, but in winter i use 5w/20 or 10w/20. As far as brand, it's really a personal preference. I still use castrol in my personal vehicle.

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What kind of motor oil do i need for 2003 bmw 325i


use a 5/30 synthetic oil..its good for winter and summer.

Apr 01, 2010 | 2003 BMW 325

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What motor oil weight should I be using on my 96 olds 88....we live where the winter temps can go as low as -10 F and as hot as 95F in the summer


5w 30 or 10w 30 during the winter. After an oil change... check your oil after 200-300 miles of use. Is the level the same? If so your weight is fine. If it drops, it's to light of an oil and your engine is now "drinking it" like fuel, move to a heavier weight. As far as Changing between winter and summer. Changing Oil weights is not bad for your motor so if the winter you go with 5w 30 and it works, great, shoot for the same during the summer. If it seems to "drink it" during the summer using this weight, go up to the next (10w 30)

That being said. Changing from natural oil, to synthetic, back to naturual , or vice versa... swapping back and forth between these KINDS of oil has been known to cause damage. so whatever weight you decide on, stick with one "type", natural or synthetic.

Feb 27, 2010 | 1998 Oldsmobile 88

1 Answer

What weight motor oil is the best for a 3.7L v-6 2004 Jeep Liberty?


Use 5w30 engine oil in the winter and 5w40 in the summer.

Dec 20, 2009 | 2004 Jeep Liberty

1 Answer

My daughter just got an 02 Accord and I'm wondering where the oil filter is located, does the drain plug require a new washer and what oil weight would be the best, it has 96K on it?


LOOK ON THE DRIVER SIDE. OIL FILTER ON THE SIDE OF THE ENGINE.YOU CAN USE 10W-30 SUMMER AND 5W -30 WINTER.IF ITS LEAKING REPLACE IT.

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2 Answers

Weight oil?


I'd use 5 w 30 in cold or cool weather, then switch to 10 w 30 or, 10 w 40, when it gets hotter.

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1 Answer

1997 c class merc with oil consumption problems


O.K. Let's use 20 weight for example. A straight weight oil is just that, a straight 20 weight in viscosity, it doesn't change when it gets hot or is cold, so it won't thin when heated. It will read
sea 20 on the container. A 20/50 has a viscosity that changes when heated. When cold it is a 50 weight, then as it heats up it thins to a 20 weight. A 20/50 might not be too bad to run in this situation, but the viscosity breakdown is quicker with the mixed viscosity oils, so I generally recommend running a straight weight, such as 15 or 20 in the winter, and a 30 or 40 in the summer. Keep in mind that the oil does not thin, so if you have extreme cold in the winter, the car may not start very easy. If it doesn't, then you can go to a thinner oil. In the summer, if you have extreme heat, you can go with a thicker oil if the engine has a little noise, or running hotter than usual. Just remember, the lower the number, the thinner the oil. Running a thicker oil in yours, should cut down on the oil consumption.

Aug 31, 2008 | 1997 Mercedes-Benz C-Class

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