A bit of back sorry, I maintain a 5.7L for a buddy of mine which has 70K miles. I have maintained it since about 20K miles and it always used Mobil 1 AFE 0w-20 every 5K miles as he does not want deviate from the recommended viscosity. Did not use a drop between oil changes
Fast forward to the last three oil changes, I used RGT since we scored a stash like a lot have and the truck starts using oil 1qt per 1K miles. So at 4K we dumped the oil and used Mobil 1 AFE again and oil burning stopped? Now on the third oil change went back to RGT since we have a stash to use and burning started again.
I am starting to re think my position that oil is oil. Maybe there is some truth to the fact that certain cars prefer certain oils.
Wondering if we should dump it so as not to poison the CATS with all that oil burning or wait till OCI time?
Not bashing RGT as I use it in other vehicles and I am brand agnostic.
I may try supertech, valvoline as I have those in the stash as well to see how those behave. With an 8quart sump though hate to waste good oil.
Fast forward to the last three oil changes, I used RGT since we scored a stash like a lot have and the truck starts using oil 1qt per 1K miles. So at 4K we dumped the oil and used Mobil 1 AFE again and oil burning stopped? Now on the third oil change went back to RGT since we have a stash to use and burning started again.
I am starting to re think my position that oil is oil. Maybe there is some truth to the fact that certain cars prefer certain oils.
Wondering if we should dump it so as not to poison the CATS with all that oil burning or wait till OCI time?
Not bashing RGT as I use it in other vehicles and I am brand agnostic.
I may try supertech, valvoline as I have those in the stash as well to see how those behave. With an 8quart sump though hate to waste good oil.