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Message: [QUOTE="Bean, post: 337944, member: 318"] Putting this info up for everyone out there with heui injectors, especially the ones that run Rotella. We had a customer recently that we could not get his idle right by way of email so he came all the way down from Cleveland to get live tuned. Usually Jon can dial in an idle within about 30 minutes, not this truck. The idle would oscillate up and down, Jon could get it to calm down then 30 seconds later it would start doing it again. One of my first thoughts was oil, but upon inspecting the oil it looked brand new and the customer said it only had 2000 miles on it so I decided that couldn't be it. Well after about 14hrs of trying everything from tuning to moving injs around installing a SRP1 and then a new IPR I decided to revisit the oil. I had Jon put in 3 pints of Schaeffer's Moly EP treatment and by the 2nd bottle the idle was calming down and by the 3rd it had smoothed out completely. Moral of the story is if your tuner can not make your idle smooth look at your oil. If its Rotella at all I recommend changing it immediately. [/QUOTE]

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