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Update…. Talked to Blackstone and told them the standard 1/4 tube is too big for the 2023 Cummins so they sent me a smaller size and it works perfectly… Also their customer service is excellent! I received everything in 2 days.

Makes sense..thanks

1/4” tubing is what comes with the kit.

Anyone have any ideas on how to pull oil sample from the dipstick with the Blackstone pump? The tube works fine on my 2008 Subaru but it does not want to go in far enough on my 2023 Cummins, it goes in about 3 feet and stops so it’s not getting deep enough to pull the oil…Would rather not drain...