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12-11-2009, 05:01 PM
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#1
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4th Gear Member
Join Date: Oct 2004
Location: Montreal
Posts: 1,304
Car: e83 3.0si
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Oil for the e30 this winter
Well my complete lack of funds for a winter beater has led to me driving the e30 this winter despite being very fearful of the rust that will inevitably develop. Anyway, I just got my new diff. put in by Raph and I think she deserves an oil change. What oil do you guys recommend. I was thinking 10w30 but I don't know if that will be too thick. Anyway let me know what you guys suggest for our -30+ winter days.
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12-11-2009, 05:14 PM
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#2
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Classifieds Moderator
Join Date: Apr 2003
Location: T.Dot / FL
Posts: 9,772
Car: M3
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I used to run 10w40.
I don't think anything can be too thick for an e30
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12-11-2009, 06:38 PM
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#3
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Drifter
Join Date: Dec 2007
Location: Pickering
Posts: 1,315
Car: 90 5.0l v8 325is
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In the engine or the diff?
Thinner is going to be better for startups, I used to run either 5w30 or 10w30
Steve
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12-12-2009, 02:24 AM
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#4
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4th Gear Member
Join Date: Oct 2004
Location: Montreal
Posts: 1,304
Car: e83 3.0si
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I was asking about engine oil. I think I will probably end up running 10w30.
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12-12-2009, 02:25 AM
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#5
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4th Gear Member
Join Date: Oct 2004
Location: Montreal
Posts: 1,304
Car: e83 3.0si
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Quote:
Originally Posted by T.Dot_E30
I don't think anything can be too thick for an e30 
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haha thats what I was thinking I just don't want anything that will effect start up in the winter.
thanks for the suggestions
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12-12-2009, 04:22 AM
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#6
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6th Gear Member
Join Date: Sep 2008
Location: Oshawa
Posts: 4,530
Car: 91 318is,93 325is...
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15w50 Mobil.....year round wicked oil!!!
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12-12-2009, 09:51 AM
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#7
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Parts hoarding partner...
Join Date: Nov 2007
Location: Toronto
Posts: 3,428
Car: 325IS 87-325IC 92-IC
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10w30 is fine...you aren't racing the damned thing!!! m20 is virtually indestructible...
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12-12-2009, 06:03 PM
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#8
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3rd Gear Member
Join Date: Nov 2007
Location: Ottawa
Posts: 369
Car: '88 IX turbo
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dont let that thing rust....but since youre driving it in the ottawa winter, when it does rust, i have dibs on your headlights and your interior....
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12-12-2009, 11:08 PM
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#9
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6th Gear Member
Join Date: Dec 2002
Location: Ottawa
Posts: 4,006
Car: e46 M3
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For an Ottawa winter use 5w-30 if you're using dino oil. Don't use anything thicker Please please please. the cold mornings the engine will thank you. Most engine wear occurs at cold start, the faster it flows when cold the less wear there will be, and the longer the engine will last.
BTW a 10w-30 has the same viscosity as a 5w-30 when hot. So using a 10w-30 during the winter is just pointless, because you're ending up with less protection when the engine needs it most, at the cold end of the scale. Also during the dead of winter, the oil will not reach the temps stipulated by the second viscosity rating (210f), meaning the lower end becomes much more important. (I've done physical measurements on this). So stick with a 5w-30.
__________________
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12-12-2009, 11:12 PM
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#10
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6th Gear Member
Join Date: May 2006
Location: Ottawa
Posts: 2,018
Car: 318T
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You can't even find that in wikipedia ... Nice one adam
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12-13-2009, 04:29 PM
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#11
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4th Gear Member
Join Date: Oct 2004
Location: Montreal
Posts: 1,304
Car: e83 3.0si
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What I was looking for. Thanks Adam
Quote:
Originally Posted by chromius
For an Ottawa winter use 5w-30 if you're using dino oil. Don't use anything thicker Please please please. the cold mornings the engine will thank you. Most engine wear occurs at cold start, the faster it flows when cold the less wear there will be, and the longer the engine will last.
BTW a 10w-30 has the same viscosity as a 5w-30 when hot. So using a 10w-30 during the winter is just pointless, because you're ending up with less protection when the engine needs it most, at the cold end of the scale. Also during the dead of winter, the oil will not reach the temps stipulated by the second viscosity rating (210f), meaning the lower end becomes much more important. (I've done physical measurements on this). So stick with a 5w-30. 
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