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Home » Public Forums » GMCnet » [GMCnet] Dip stick calibration question
Re: [GMCnet] Dip stick calibration question [message #271453 is a reply to message #271441] Sun, 08 February 2015 22:32 Go to previous messageGo to previous message
Brian Waddell is currently offline  Brian Waddell   United States
Messages: 409
Registered: March 2010
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we are trying to calibrate a dipstick...brian


> Date: Sun, 8 Feb 2015 19:34:21 -0700
> To: gmclist@temp.gmcnet.org
> From: dolinskys@shaw.ca
> Subject: Re: [GMCnet] Dip stick calibration question
>
> Yeah a drain plug drilled with a nipple and some clear tubing would suffice. Get an idea where the crank bob weights go down to in the pan, don't
> really recall on the olds and keep the level just below 1/2" ? the crank and if you have a cooler that is located higher than the bottom of the crank
> do your measurement while running as you will have some drain back when engine is shut off.
>
> I have seen many engines that will go an oil change interval somewhat down from dipstick mark but will continue to get rid of oil at dipstick level.
>
> You don't want running oil level hitting the crankshaft weights, windage is the least of your problems but the crankshaft whipping the oil will
> introduce air into the oil and lower oil pressure.
>
> If the level goes higher during shut down because of a higher oil cooler it's less of a problem during cranking than running unless it's -40 degrees
> and as long as it's not above the bottom of the rear main, pan rails etc or you can expect more leaks.
>
> More oil the better IMO but not hitting the crank.
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