warming up engine
02-15-2005, 07:36 PM
#21
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I don't think it matters how much you warm up at idle, the oil still isn't going to be warm when you start driving. Oil temp almost always trails water temp, the coolant is carrying away the heat of combustion but to warm everything else up you need to do work ie move.
After a few seconds, you should be good to go. As others have said, be easy on the car- no high revs and no bogging either. Once you start to drive, everything will warm up evenly and quickly. But in cold temps oil temp can trail water temp by a lot, so to be on the cautious side I stay out of VTEC for a few minutes after the coolant temp has stabilized.
If there's no benefit to doing it, then all you are doing is wasting gas and emissions. I can tell you, someone who maintains their car well, doesn't VTEC or bog when cold, etc. is not going to experience engine failure due to lack of idle warmup. Engine problems happen due to manufacturing defects or abuse (overrev, high revs when cold, overheating, oil starvation etc.)
Peter
After a few seconds, you should be good to go. As others have said, be easy on the car- no high revs and no bogging either. Once you start to drive, everything will warm up evenly and quickly. But in cold temps oil temp can trail water temp by a lot, so to be on the cautious side I stay out of VTEC for a few minutes after the coolant temp has stabilized.
If there's no benefit to doing it, then all you are doing is wasting gas and emissions. I can tell you, someone who maintains their car well, doesn't VTEC or bog when cold, etc. is not going to experience engine failure due to lack of idle warmup. Engine problems happen due to manufacturing defects or abuse (overrev, high revs when cold, overheating, oil starvation etc.)
Peter
02-16-2005, 11:51 AM
#23
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Originally Posted by savs2k' date='Feb 16 2005, 12:30 PM
honda only says drive right away because your engine produces the most amount of smog when your warming it up since your running open loop. warming up your car doesnt do harm.
02-16-2005, 08:11 PM
#25
When you start the car it is cold. How cold is relative to where you are on this great earth of ours. Honda engineers have gone to great lengths to install systems to assure emisions remain low through the warm up cycle (OBDII will verify this 
) To get back to the original question...an incline makes NO difference. The oil system is pressurized at start up and not effected by gravity (unless your oil is low and then you F****anyways). Your now cold oil is lubricating the internals which is fine. If you are too stupid and try to punch it early the VTEC solenoid will not engage (more brilliant Honda engineering). Most call it 3 bars but in fact it is the oil pressure reaching....it's too late and I don't want to look it up. Bottom line is be alert to your surroundings. If yuou are in Southern California on a cold 60 degree morning let it set a minute. If you are in Minnesota on a warm 35 degree morning....might want to give it 10.
Utah
) To get back to the original question...an incline makes NO difference. The oil system is pressurized at start up and not effected by gravity (unless your oil is low and then you F****anyways). Your now cold oil is lubricating the internals which is fine. If you are too stupid and try to punch it early the VTEC solenoid will not engage (more brilliant Honda engineering). Most call it 3 bars but in fact it is the oil pressure reaching....it's too late and I don't want to look it up. Bottom line is be alert to your surroundings. If yuou are in Southern California on a cold 60 degree morning let it set a minute. If you are in Minnesota on a warm 35 degree morning....might want to give it 10.Utah
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