oil sample
#1
Registered User
Thread Starter
Join Date: Oct 2005
Location: Southern, California
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
oil sample
I would like to know if anyone knows how to get an oil sample without changing your oil. I would like to send a sample to have analyzed. I do not change my own oil as of now. When I bought my truck the dealer gave me 4 free oil changes. so as of now they are changing my oil. Thanks
#2
Registered User
This is way I do it. Plans may have to change if you are using the filter port for a bypass filter.
All from the hardware store. Buy an 1/8" NPT X 1/4" compression valve
(these are common for ice makers and swamp coolers), a 1/8"X3" nipple and
3' of 1/4"plastic tubing. With the engine off but warmed up connect this setup to the plugged 1/8" port on top of your oil filter housing, hand tight no Teflon tape. Start the engine, open the valve and run oil though the tubing into your oil fill spout to flush it
out for awhile. You can now take a sample with great control with the
sample being the only loss of oil. Shut down the engine, open the 1/8
valve to let oil in the tubing drain back then remove it and replace the
plug. If you like leave the valve in place and just remove the tubing.
All from the hardware store. Buy an 1/8" NPT X 1/4" compression valve
(these are common for ice makers and swamp coolers), a 1/8"X3" nipple and
3' of 1/4"plastic tubing. With the engine off but warmed up connect this setup to the plugged 1/8" port on top of your oil filter housing, hand tight no Teflon tape. Start the engine, open the valve and run oil though the tubing into your oil fill spout to flush it
out for awhile. You can now take a sample with great control with the
sample being the only loss of oil. Shut down the engine, open the 1/8
valve to let oil in the tubing drain back then remove it and replace the
plug. If you like leave the valve in place and just remove the tubing.
#5
Registered User
Originally Posted by Timmay2
Oversimplified version:
Loosen drain plug slightly. Oil will drip. Catch oil. Tighten drain plug.
Loosen drain plug slightly. Oil will drip. Catch oil. Tighten drain plug.
Two reasons, dirt and metal debris from loosening the plug will enter the sample. Also you would be picking up sludge from the bottom of the oil pan.
We're talking parts per million here, it doesn't take much to contaminate a sample. Just leaving a sample bottle open for one day will collect enough dust that your silicon level would indicate you had been running without an air filter.
If you must take a sample from the drain plug it needs to be done in about the middle of the drain. That doesn't help much if you are checking to see if the oil is still good to use.
Thread
Thread Starter
Forum
Replies
Last Post
ctd4stan
3rd Gen Engine and Drivetrain -> 2003-2007
6
05-05-2011 10:39 PM
RDM16CTD
3rd Gen Engine and Drivetrain -> 2003-2007
20
05-09-2006 07:46 AM