cold start & warm-up -- best method
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cold start & warm-up -- best method
I posted this in a different thread but thought it was worth repeating here for those who will not open another "oil" thread....
on the topic of cold start/warm-up/idle --- I believe the best strategy is to start, wait for the oil to flow to the top end**, and then drive EASY until at least 10 minutes AFTER the temp gauge reaches normal operating temp (oil takes longer to heat than coolant)
**to figure out how long it takes for oil to flow to the top end, you start the car cold (after sitting overnight), look inside the filler cap with a flashlight, and watch for oil to gush from the lifters. at first it will start slowly, then will pour out. it is easier to see with dirty/black oil. do this at a few different temps to calibrate, and use that as a guide for your daily starts. for me, it is about 30 seconds at 60F, 60sec at 20F, and 90sec at 10F with a "typical" 30wt. (this will vary depending on the relative thickness of the oil you are using and the performance of your filter's ADBV)
the danger with excessive idling at cold start is fuel dilution. cold starts dump a lot of raw gas into the CC, and it will wash down the cylinder walls and get into the oil. the longer you idle the worse it will get. once the oil is flowing full there is no reason to continue idling.
http://forums.maxima.org/showpost.ph...8&postcount=30
on the topic of cold start/warm-up/idle --- I believe the best strategy is to start, wait for the oil to flow to the top end**, and then drive EASY until at least 10 minutes AFTER the temp gauge reaches normal operating temp (oil takes longer to heat than coolant)
**to figure out how long it takes for oil to flow to the top end, you start the car cold (after sitting overnight), look inside the filler cap with a flashlight, and watch for oil to gush from the lifters. at first it will start slowly, then will pour out. it is easier to see with dirty/black oil. do this at a few different temps to calibrate, and use that as a guide for your daily starts. for me, it is about 30 seconds at 60F, 60sec at 20F, and 90sec at 10F with a "typical" 30wt. (this will vary depending on the relative thickness of the oil you are using and the performance of your filter's ADBV)
the danger with excessive idling at cold start is fuel dilution. cold starts dump a lot of raw gas into the CC, and it will wash down the cylinder walls and get into the oil. the longer you idle the worse it will get. once the oil is flowing full there is no reason to continue idling.
http://forums.maxima.org/showpost.ph...8&postcount=30
start it and 6k right away..............not really....I just start it and let it idle for a few minutes then drive like a grandma until its at proper operating temp......whether its the right or not i dont care..thats for winter...in the summer i start it and by the time i get teh radio set and seatbelt on and ish i figure its good for summer
Senior Member
Joined: Aug 2005
Posts: 856
From: MASS
If its just cold (most days in MA) then I get in and drive. Go easy until the temp gauge tells me that Im good to go.
If its EXTREME F*CKING COLD then I let it idle for a few minutes first, then drive like a granny till the temp gauge is up.
If there's snow on the car I start it, it idles while I brush the snow off, then I go (take it easy until the temo gauge blah blah)
If its EXTREME F*CKING COLD then I let it idle for a few minutes first, then drive like a granny till the temp gauge is up.
If there's snow on the car I start it, it idles while I brush the snow off, then I go (take it easy until the temo gauge blah blah)
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