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Sedans Volvo S60 Ultimate AWD Sports Sedans
828 messages, Last post on Oct 03, 2009 at 9:40 PM
You are in the Volvo S60 Forum. Your Hosts are pat & karens
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Replying to: xeye (Dec 23, 2008 3:55 pm)
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Replying to: investor27 (Jan 12, 2009 9:39 am) I cannot for the life of me figure out why that might be. I used to live in Chicago and owned two turbo cars while I lived there. The only issue (if you can call it that) with cold weather that I ever found was that you were able to get significantly MORE power from the engine on very cold days, especially if the intake was intercooled (which the 335i is). Best regards, Shipo
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Replying to: shipo (Jan 12, 2009 10:14 am) |
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Replying to: ateixeira (Jan 12, 2009 10:20 am) 
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Replying to: shipo (Jan 12, 2009 10:22 am) |
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Replying to: shipo (Jan 12, 2009 10:22 am) I, for one, do not think it is a good idea to block the front air-intake. It is my understanding as well that colder air increases performance by increasing the horse power. And I believe that turbos and twin-turbos run a lot hotter than normal aspirated cars and will need the front air-intakes to cool them down. I'll try to find the pictures of their projects and post them here.
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Replying to: investor27 (Jan 12, 2009 11:47 am) 1) Many things that may be true for the TDI generally have zero bearing on other cars, turbocharged or not. 2) Colder air allows for increased performance due to the fact that the colder the charge, the denser it is (i.e. more oxygen molecules per given volume, allowing for a commensurate increase in the amount of fuel injected into it -- this is more of a factor with normally aspirated engines), AND the cooler the intake charge, the high the boost can be and/or the further advanced the ignition and valve timing can be before reaching the point of insipient detonation. Best regards, Shipo |
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Replying to: investor27 (Jan 12, 2009 9:39 am) On the other hand, Green Bay is a place where only truly die-hard Packer cheese-heads live! I don't have any doubt at all that the 335xi will perform very well in the cold. I do suggest following BMW's recommendation about top tier gas (Shell, Sunoco, etc. Your dealer can give you a list). Also, check out the right oil. I use Castrol Synthetic 5W-30. That should work for you but check with a knowledgeable mechanic. I used to think everyone should drive a 335xi, but if that were true, I wouldn't be able to blow by other cars so easily! Go for it. I'm sure you won't regret it. I would strongly suggest a block heater, though. I used one for many years in Montreal, and it was an engine saver. xeye
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Replying to: shipo (Jan 12, 2009 10:14 am) I'm amazed that I can offer something that I'm sure you already know. It's the same reason you get lousy mileage on the same trips in the winter as the summer. The colder air is denser and the engine knows this. It appropriately injects more fuel to balance the density of air. It may produce more power, but I don't know the physics and chemistry of the equation. (College was a long time ago.) Even though the intake may be intercooled (I wasn't aware of this), it's starting with much colder air. It depends on how the intercooler determines when it's job is done. If you have more information on this, I'd appreciate your input. xeye
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Replying to: xeye (Jan 12, 2009 3:50 pm) Please be advised that Castrol Syntec 5W-30 DOES NOT meet the necessary oil specifications required for any BMW built since at least the late 1990s. Running that oil is a recipe for a sludged engine and a refusal from your dealership/BMW for warranty repairs if/when the engine fails. The only Castrol Syntec that meets the BMW LongLife-98 and LongLife-01 oil specifications (equired for every gasoline powered BMW sold this decade is Syntec 0W-30. That said, you can buy a Castrol produced oil under the BMW label from your dealership that is in fact a 5W-30, but make no mistake, that is NOT the same oil as is in the Castrol Syntec 5W-30 bottle. For all who buy their own oil, the only two generally available LL-01 oils sold here in the U.S. are Mobil 1 0W-40 and Castrol Syntec 0W-30. Best regards, Shipo |
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