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I have recently purchased a 2005 6.0l crew cab auto 4x4 Lariat with 96,000mi. As some know the truck is getting head gaskets ARP studs, EGR delete and oil cooler with updated sct fitting, SCT from IDP. My Question is do I have to many miles on this truck to switch to the synthetic 5w40?
And thanks to all with the help with my first diesel.
You are definitely on the right track. These motors love 5W40 synthetic oil. I've run both Mobil 1 TDT and Rotella T6. My truck seems to prefer the Mobil 1. With Rotella T6 it had a slight miss when cold which I attributed to one or two injectors experiencing stiction. No matter what oil you decided upon, I strongly recommend changing it at 5K intervals - and always use motorcraft filters.
These trucks are hard on oil, and oil is cheap considering the cost of injectors.
2006 CC SB 4x4 6.0L
BPD 6 Phase 53v FICM, EGR, HD Oil Cooler, Bypass Oil Filter & Water Pump
ARP Studs w/ OEM Gaskets
DC Power 190a upper; DB Electric 200a lower alternator
295/65/20 Toyo MTs
PMF 3 Link
7,500LB Tuff Trucks Leveling Coils
Icon 2.5 piggyback CDC shocks
Dynatrac Free Spin Kit with Dynaloc Hubs
EDGE CTS Monitor w/ EGT, pressure, and temp sensors
Blue FPR Spring Kit
Twin F450 Auxiliary Springs
Banks Monster Exhaust
Truetrac rear/E locker Front with 4.11s