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Old 12-30-2001, 04:28 PM   #1
armand1
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Default Which weight oil to use in this situation?

In a month or two (still winter), I plan on driving into Idaho/Montana/Wyoming, where it gets a bit chillier at night than the 30F+ Seattle. I expect to have about 3k miles on the car then, and had the oil changed at 800 (10w30 dino).
Q: should I get the oil changed just before the trip to a wider range oil like 5w30 to help deal with the 0F nighttime temps I will encounter, or just leave the 10w30 in the car?
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Old 12-30-2001, 05:45 PM   #2
Alan
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Yeah, put in some 5W30 oil. After all you might hit a cold spell and have to deal with -15 which would be pretty cold for 10W oil. For the $10 it costs for oil and filter, it's a cheap thrill. I'm south of you, in Portland, and I use 5W30 from November through March. Why not - it gives better gas mileage, and there's no way we're going to encounter temps over 80 unless we drive to Arizona.
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Old 12-31-2001, 02:49 AM   #3
armand1
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Thanks! I'm still new to travelling to temps below 20F or so.
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Old 12-31-2001, 10:01 AM   #4
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Yeah, I've switched to 5w30 year round.

I've tested it down to 9 deg F.

Glenn
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Old 12-31-2001, 11:15 AM   #5
CosmoTheCat
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You'll probably want to change the oil before leaving on the trip anyway. I drove from Kirkland to some small town in NW Montana, then on over to Wisconsin and back a few years ago and the whole trip was around 3400 miles, and it's a pain to have to stop on a trip to do an oil change.
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Old 12-31-2001, 09:16 PM   #6
javalee
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go with amsoil 0-30
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Old 01-01-2002, 06:07 PM   #7
armand1
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Thanks again! I just heard today that it's now been over 2 calendar years since the temp. hit 90F in Seattle, so 5w30 it is.
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Old 01-01-2002, 06:14 PM   #8
Alan
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Quote:
Originally posted by armand1
I just heard today that it's now been over 2 calendar years since the temp. hit 90F in Seattle...
Does that mean it hit 90 in Seattle in January of 2000??
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Old 01-02-2002, 02:49 AM   #9
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Quote:
Originally posted by Alan


Does that mean it hit 90 in Seattle in January of 2000??
'Twas a brutal ski season, that '00 was.
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Old 01-02-2002, 09:05 PM   #10
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Quote:
Originally posted by Alan
Yeah, put in some 5W30 oil. After all you might hit a cold spell and have to deal with -15 which would be pretty cold for 10W oil. For the $10 it costs for oil and filter, it's a cheap thrill. I'm south of you, in Portland, and I use 5W30 from November through March. Why not - it gives better gas mileage, and there's no way we're going to encounter temps over 80 unless we drive to Arizona.
Im across the bridge from you and my wrx wagon is at 3000miles, so I just went down and got a filter and some 10w30. I prolly shouldve gotten 5w30 but im driving to Houston sometime within the next 6-8 days and I figured id be experiencing some radical temp changes during the trip.

Think I should go back and get 5w30, or even, what would be best for a 3000mile trip that will consist of 70-80mph ave speeds?
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Old 01-03-2002, 02:44 AM   #11
Alan
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Quote:
Originally posted by mlambert


Im across the bridge from you and my wrx wagon is at 3000miles, so I just went down and got a filter and some 10w30. I prolly shouldve gotten 5w30 but im driving to Houston sometime within the next 6-8 days and I figured id be experiencing some radical temp changes during the trip.

Think I should go back and get 5w30, or even, what would be best for a 3000mile trip that will consist of 70-80mph ave speeds?
I'd say you got the right oil. The only reason for 5W is for cold starts, once the oil is up to temperature, it will be the 30 weight that is the important one and the 10W-30 will remain thicker after use and at higher temperatures than the 5W30.

Having said that, it depends on your route, and where you plan to overnight. If you are going through Wyoming and Colorado, and you get up in the morning and the temperature is below 20, you want to let the engine warm up gently, and if it gets REALLY cold, it could be tough to crank over the engine.

But assuming you drive down I-5 to California, and then take I-10, you'll never have any problem. Heck in the summer, for severe running, I've used 20W-50 - but I doubt you'll need that, unless you get an opportunity for some track time with the car!
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Old 01-16-2002, 04:14 AM   #12
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just go with 5w-30...my 2 pennies!
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Old 02-07-2002, 02:16 PM   #13
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Doesn't Subaru recommend 5W30? I don't know why you'd want to use anything heavier unless you live in an inferno, or race. I've used 5W30 synthetics (Amsoil, Mobil 1, Chevron 0W30) from 90 above to 50 below, and have had no problems whatsoever.
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