Filled up with high test and lost 3.9 mpg!!! Has anyone experienced this?
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So I am new to LR's and I was not aware of most of the things mentioned on this thread. This is great info. So I will start running Shell 91 or higher through my 96. I have been getting crap for mpg (around 11-12). Course I have only had it for about 2 months now so it probably needs a major tune up. What is the deal with the Seafoam? I had a 2001 F-350 with a 7.3L diesel prior to this and I was told by a reliable diesel mechanic that Seafoam has a high alcohol content add would dry out my seals. Is this not the case with the gas engines? How many times should I run the Seafoam through to clean things up? Also is there anything else I need to run through her to clean her up good? Thanks for your help guys.