Should I warm my car up before I drive?
I also warm up the car before really getting on the gas...I'll drive it right after starting the ignition but will keep the revs below 3k. I think this also helps with keeping my after market catalytic converters ok.
Look at the E46 BMW M3...the car has a "redline" at a relatively low RPM that will increase as the car is warmed up.
Look at the E46 BMW M3...the car has a "redline" at a relatively low RPM that will increase as the car is warmed up.
the most wear occurs at startup,
the oil should leave a thin film on most components to protect them through the first few strokes, within a few revolutions fresh oil should be flowing.
the real issues with warming up the engine is tolerances, gaps, clearances, metal (and most other things) expand as they warm up. bearings will be running with larger clearances, there will be more slack between the pistons and sleeves, less compression, more noise from the valve train, etc etc.
drive easily, at least untill you can feel warmer air coming out of the vents (have some saturation of the block).
you won't wear the engine out though lack of oil, but through slack.
the oil should leave a thin film on most components to protect them through the first few strokes, within a few revolutions fresh oil should be flowing.
the real issues with warming up the engine is tolerances, gaps, clearances, metal (and most other things) expand as they warm up. bearings will be running with larger clearances, there will be more slack between the pistons and sleeves, less compression, more noise from the valve train, etc etc.
drive easily, at least untill you can feel warmer air coming out of the vents (have some saturation of the block).
you won't wear the engine out though lack of oil, but through slack.
Originally Posted by Inversed
with winter here i let it warm up for 5 minutes before i drive. the difference is very noticeable. my car thanks me.
The factory service manual refers to warming up the car when doing thermostat diagnostics. It says to rev the engine between 2 and 3 K RPM for ten minutes to ensure the engine is hot. If you use that as a guide, that would mean you could drive at 30 MPH to warm the car up without damaging anything. I just use my gauges... I keep oil pressure below 100 and when the pressure at idle is below 50, I'm ready to start pushing a bit. If you don't have gauges, about 5 minutes of "old lady" driving should get you there.
Originally Posted by mixturepinoy
I usually warm it up by farting when i get inside
Warm Up your.........
I've always have warmed up my cars, very important especially with our cold
winter weather. I let it idle while I dust it off, normally 3 to 5 minutes. Then
I don't take it over 1500 RPM until it comes up to temp.....that's my respect
for the car!
winter weather. I let it idle while I dust it off, normally 3 to 5 minutes. Then
I don't take it over 1500 RPM until it comes up to temp.....that's my respect
for the car!
I think we all agree: Just let it warm it for about a minute or so and drive until your oil temp (or is it radiator temp?) reads the halfway mark. For me, I get in the car, turn it on, clean my windshield due to water/rain/mist and then hope back in and it's ready to go.
Originally Posted by Beebo
i dont drive til the temp gauge reaches halfway...
has anyone ever gone WOT with a cold engine???? not the right thing to do, but SOUNDS SO GOOD!!!
Actually that might hurt the engine more that it helps. If you just let it sit there and idle vs driving away gently, it will prolong the time it takes the ecu to go into close loop mode. The ecu's start up open loop mode runs the engine richer to help start the car and warm it up faster. But richer is worse for the oil, gas mpg and cats.
Originally Posted by Beebo
i dont drive til the temp gauge reaches halfway...




