Hey Board, long time investor, however, rarely post (read most of the posts). I have never come across a post where one of the ihub members has posted that they own one of the HLNT products and have commented on its performance. If there was one or if some does own and can commented I would be interested to read the post. I do not own a disel or I might have one myself; I do, however, know people who own disel trucks and would like to recommend the product if it works well. Thanks in advance for the help. GO HLNT!!!!!!!