Join Date: Aug 2016
Location: Idaho panhandle
Currently running T6 in our 7.3's but considering a change since Shell is not exactly a stellar oil producer (I'm a mobil one valvoline fan)
I ran one change of the Valv synthetic diesel oil, no change from the shell, runs the same, same cost.
I am considering Delvac since I love Mobil one, I figure they probably make good diesel oil too?
1997 CCFB 7.3, ZF5, 4x4, 4.10, baby swamps, TS6, E99 spyder, RiffRaff pipes, 6.0 FMIC, RSK, 315 toyo at
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2001 Excursion 7.3, auto, 4x4, 3.73, collecting parts for suspension lift
2000 E350 7.3, auto 2wd, 3.73, toy hauler camper conversion...researching 4x conversion
21.9 liter family