justin_o_guy2 wrote on 02/26/17 at 09:39:58:I went to Tractor Supply, the usual Rotella 15/40 , always there, spot. The T3 is now T 4,the lone quarts of T 3 are Five Bucks,,
Gallons of T4 are $13.00,
So, I looked and read and found no ZDDP numbers anywhere..
Questions to the learned..
Is the T4 gonna protect the cam as is or do I need to buy a bottle of Red Line?
If I need it, how much should I add to a gallon?
I would open a gallon, add, shake it up, or, do it however you guys say..
Ruttly said
I read here to just add 1 ounce of redline to the engine during the oil change
But was that the T3 or 4? At around 1200 PPM, the ZDDP starts doing damage.. The T3, alone has seen one engine make 150,000 miles and everything passed inspection except rings and maybe valve guide and IIRC, valve stems were looking ready to give up.
I was really hoping to find gallons of T3, so I didn't pay close attention. I apologize for needing to have it repeated,