Join Date: Aug 2005
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I use schaeffer's 137 additive and have had good luck with and it was cheaper over all then the others but not as easy to come by.
2005 F-250 Dark Toreador Red, Lariat Lux. package, 6.0 PSD, Torqueshift auto trans, 4x4, ESOF, tow command, Sirius Satellite radio, Retrax bed cover, Kermit Coolant filter, GOS Headlight harness, Fog light High beam Mod, Heated mirrors upfitter #1, AIC Upfitter #4, Wix Powertrap , Harpoon Mod, CCV mod, Magnaflow 4" turbo back and no kitty, Oil Guard by-pass, and Schaeffers 5w40.
94 ford Ln8000 8.3 cummins MD3060
91 ford Ls8000 7.8 ford allison MT653
98 Freightliner FL80 8.3 cummins MD3060