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View Poll Results: Fossil Oil weights
5W-20 5 2.49%
5W-30 48 23.88%
10W-30 36 17.91%
10W-40 54 26.87%
15W-40 27 13.43%
15W-50 16 7.96%
20W-40 1 0.50%
20W-50 14 6.97%
Voters: 201. You may not vote on this poll

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Old 09-24-2004, 09:38 AM   #1
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Default Whats your weight? (fossil oil)

Since I'm considering switching to synthetic oil, I think it's suiting to start a poll on oil weight. This is for regular oil users ONLY.

Please include your location and the average temperature where you drive.
1997 318i - All stock.....for now
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Old 09-24-2004, 03:23 PM   #2
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I'm running Mobil-1 15-50 in my 3.2. I don't remember what I was running in my 1.9, but I think it was 15-40.

I'm in CT (usually) but the BMW is never driven in winter.
"Speed's just a question of money. How fast you 'wanna go?"

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Old 09-24-2004, 06:36 PM   #3
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Mobil 10-40 in the M44
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Old 09-26-2004, 09:55 AM   #4
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I use Castrol 20w50 in the summer (85), 10w40 in the winter (30).
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Old 10-02-2004, 07:27 AM   #5
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Just been going according to the manuals that came with my '95. Recommends 15-40 for summer and probably switch to I think it's 5-30 for winter. Probably wrong so I'll be double checking. Supertech is unfortunately what is on the shelves in my area. Not a lot of 15-40 castrol in my area otherwise I'd be using it. Probably order some for my next oil change through napa or something.
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Old 10-19-2004, 03:14 AM   #6
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Default Mobil 1

Mobil 1 15-50 in Calif. Switched when started tracking my 95 Sport.
[size=-2]95 Sport-Alpine White-5sp conversion, M3 clutch, 3.72 E30-LSD, Bilstein PSS-9s, 3"stainless-TriFlo, 17s from 330i staggared w/BFG KDWs, DASC K&N w/foglight intake, cross-drilled BavAuto rear rotors w/Pagids, 4-pot Brembos w/drilled 320mm front rotors, stainless lines, BimmerWorld RSMs. BavAuto front splitters. M-Style rear spoiler, tower brace, X-brace.
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Old 10-28-2004, 08:54 PM   #7
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I only use Mobil 1 RED top I think it is 15w50. douring the summer the oil gets pretty hot and lacks of viscosity. heavier weight keeps the compression going.
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Old 12-24-2004, 05:05 PM   #8
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20W50 I live in Indiana right now it is 0 degrees, but usually during winter it is around freezing or a little above.
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Old 12-24-2004, 07:30 PM   #9
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20W-50.....for race only

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Old 10-24-2005, 02:20 AM   #10
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Actually, I run a mix of around 7.5w30 LOL.....dang pushrod gm's LMAO
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Old 10-24-2005, 03:55 AM   #11
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10w30 for summer and 5w 30 for winter i use mobil 1 and im at new jersey. at winter we see temp below 30
Intake, Sony mp3/cd player, remus cat-back exhaust,
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Old 02-24-2006, 04:45 PM   #12
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castrol syntec 10W40 year round
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Old 02-24-2006, 04:52 PM   #13
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15w50 M1

although I just put in 20w50 ValvoSyn.
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Old 03-16-2006, 10:52 PM   #14
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I run 15w50 mobil 1 too.

Works great for me. It even reduced my vanos noise.
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Old 03-17-2006, 01:24 AM   #15
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Red face 10w30

I just put in 10w30 Mobil 1 full synthetic today about 3 hours ago.
I live up in MA it works well in the winter and summer.
Take Chances,Drive Fast, Be Safe!

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