I use 5w30 Mobil 1, If I remember right the 4.7 has some small oil passages
in it and the 5w works well with when the engine is cold and start ups.
-- *---------------------------------Y2KOTA---------------------------------* Don Mallett Y2K QC 4.7L Auto SLT+ http://Geocities.com/maldbnsf/ http://www.dakota-truck.net/profiles/dakota/QwkvWz@DAJFf6/profile.htm *---------------------@ RR X-ings, ³LOOK LISTEN LIVE²--------------------*---------- In article <fc.000f89f00035eba13b9aca004b21c35f.35ebb2@garfieldre2.k12.co.us>, mmachale@garfieldre2.k12.co.us ("Mark MacHale") wrote:
> I want to try a synthetic oil in my 4.7, but I can only find 10w30. Book > calls for 5w30. The last thing I want is to get worse gas mileage. What do > you think? > > Mark >
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