All,
First ever report on this truck. I bought the truck used with 16000 miles and it is completely stock, except for a drop-in K&N air filter. Did my first oil change with Rotella T 15W-40 and all since with Valvoline Premium Blue 15W-40 and K&N HP 4003 oil filter. I sent the sample due to the EVIC notice of "Oil Change Due" not exceeding 2500-3000 miles and want to see if I can safely extend the OCI to 5000-7500 miles without excessive fuel dilution. The high iron numbers and low viscosity (while not an issue according to Blackstone) has me slightly concerned. Truck is used mainly for mixed highway/city driving back and forth to work (15 miles each way) and occasionally I pull a 7000 lb. travel trailer. Any advice or basis for my concern??
First ever report on this truck. I bought the truck used with 16000 miles and it is completely stock, except for a drop-in K&N air filter. Did my first oil change with Rotella T 15W-40 and all since with Valvoline Premium Blue 15W-40 and K&N HP 4003 oil filter. I sent the sample due to the EVIC notice of "Oil Change Due" not exceeding 2500-3000 miles and want to see if I can safely extend the OCI to 5000-7500 miles without excessive fuel dilution. The high iron numbers and low viscosity (while not an issue according to Blackstone) has me slightly concerned. Truck is used mainly for mixed highway/city driving back and forth to work (15 miles each way) and occasionally I pull a 7000 lb. travel trailer. Any advice or basis for my concern??
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