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Why shouldn't you let it idle for more than 30 seconds?
I don't usually but there have been times after backing out of the garage I let it sit and idle in the driveway while I go back in the house for something I forgot. .1 GT3
I'm sure your'e not fogetting something everyday. Once in a while is ok. Don't make it a practice to warm the engine.
Starting your cold car and letting it idle is not a good thing for your engine. Letting your car warm up introduces extra fuel into your combustion chamber. Too much fuel can lead to cylinder washing and oil dilution thereby shortening the life of your engine. It's in your manual to not let your engine warm up. Start that car and drive it right away. 30 seconds and you should be in a gear and rolling down the street.
I'm sure your'e not fogetting something everyday. Once in a while is ok. Don't make it a practice to warm the engine.
Starting your cold car and letting it idle is not a good thing for your engine. Letting your car warm up introduces extra fuel into your combustion chamber. Too much fuel can lead to cylinder washing and oil dilution thereby shortening the life of your engine. It's in your manual to not let your engine warm up. Start that car and drive it right away. 30 seconds and you should be in a gear and rolling down the street.
I spent my entire youth warming my engines. My bother never did. His cars alway pulled harder once we got into the higher miles. Mine started to burn oil and my compression was lower. Granted we always had different types of cars but his engines always felt strong.
150 deg. F is not operating temperature so that's probably not a good practice. Agreed on the warm up.
The difference between oil flow of 150 degree temps and 200 degree temps is minimal as viscosity doesn't change much between these temps. The oil lubricating properties are in full effect at temps above 150 degrees. They can taper off when the oil starts getting too hot.
My RS4 turns off the 7k rpm max light at like 137 degrees. It's hammertime then.
I think of it as more of a progressive affair. Don't go from tiptoes to a marathon.... once it get's about 175 I let it stretch it's legs a little more...
The difference between oil flow of 150 degree temps and 200 degree temps is minimal as viscosity doesn't change much between these temps. The oil lubricating properties are in full effect at temps above 150 degrees. They can taper off when the oil starts getting too hot.
My RS4 turns off the 7k rpm max light at like 137 degrees. It's hammertime then.
Huh? You're absolutely wrong about viscosity change between 150 and 200 deg. F. You should look up the actual data for the oil you're using. It is certainly not minimal. Also, lubricant wear protection/load bearing capability will generally start decreasing measurably as oils approach the 275 deg. F mark (for synthetics), with some oils able to go even higher. Most cars do not reach these temperatures during normal operation, with a properly designed oiling system.
Regardless, an engine is not at operating temperature at 150 deg F, therefore beating on it at those temperatures will result in increased wear of internal components. I wouldn't advertise it as the best way to treat your car, but that's just me.
The real problem with overrevving with cold (synthetic) oil is un-needed pressure you get as the more viscous oil is trying to get through parts. In terms of coating and lubrication, oil that is hot to the touch already works nearly 100%. Once the needle starts moving you can gradually become more aggressive, which in terms warms up the oil even faster.
with old conventional oils, cold overrevving was bad because the oil was to thick to get to parts that is why the old way was to warm up your car with idle. These days the oil flows freely even when cold so your goal is t o bring up to temp quick and hence driving as soon as you fired up advise comes to be.
I usually start my car and leave the driveway, I putz down all the local residential streets just chugging along. My car's pretty warm by the time I'm anywhere near something I could mash the gas on. I'll say that when I do leave the house I have to shift at an incredibly slow pace. It's takes a while before the tranny wants to wake up.
What is the general consensus on minimum oil temp for the gt3 cars before going over 5k rpm? It takes forever to have the temp go up. I just use the guideline as “measure oil temp” stops saying engine not warm yet anymore. But I heard as high as 180F.
Make sure oil temperature is higher than "water" temperature. Then you are good to go.
Shouldn't sit and warm up except with a 2 stroke
In that case I warm it up a bit, plunger starter system gets it going on the first kick You can't scream a cold 2 stroke engine, it sputters. I run castor oil, smells great!
04-27-2021, 11:21 AM
You can't scream a cold 2 stroke engine, it sputters. I run castor oil, smells great!
