I changed the oil and filters on my old truck. Bought 12 gallons of Rotella since I couldn't find any $1/gallon delo.
Was thinking of adding that Valvoline synpower stuff or possibly the Torco stuff? Should I or not worry about it?
Because Rotella-T is fine the way it is. Adding more additives to it won't necessairly make it better, as the additive pack must be well-balanced. More of one element may not have a positive benefit at all.