My son just recently had to do a lifter replacement on a 2018 Chevy Silverado with the 6.2L L 86 engine, with about 91,000 miles/ 146,000 km.
We didn't change the oil, & I thought we should be able to pull a sample from the dipstick tube using a 38 U series Vampire vacuum pump and the 1/4 inch hose.
I measured the length of the dipstick next to the hose, & marked where the bottom of the dipstick would be to be sure I was getting it into the sump.
I found it impossible to get the tube near the mark, and into the oil sump.
Maybe there is a way to adapt to the next size smaller hose.
We were able to get enough oil to fill the collection container, but I don't know how reliable this sample would be as it is just residual oil.
It has been about 4500 kilometers since the engine work, & thinking it might be a good time to give it an early oil change & purge any contaminants that might have been introduced during the rebuild process.
I will send it on Monday, & see what it shows, & post the analysis in the forums.
Maybe this is why I haven't seen any analysis on this engine
We didn't change the oil, & I thought we should be able to pull a sample from the dipstick tube using a 38 U series Vampire vacuum pump and the 1/4 inch hose.
I measured the length of the dipstick next to the hose, & marked where the bottom of the dipstick would be to be sure I was getting it into the sump.
I found it impossible to get the tube near the mark, and into the oil sump.
Maybe there is a way to adapt to the next size smaller hose.
We were able to get enough oil to fill the collection container, but I don't know how reliable this sample would be as it is just residual oil.
It has been about 4500 kilometers since the engine work, & thinking it might be a good time to give it an early oil change & purge any contaminants that might have been introduced during the rebuild process.
I will send it on Monday, & see what it shows, & post the analysis in the forums.
Maybe this is why I haven't seen any analysis on this engine