Royal Purple, is there a real difference?

Reply #15 – February 27, 2015, 09:06:30 AM

Quote from: TurboCoupe50;445314

I sure wish I'd have been standing there, would have happy poured it in either of my Grand Marquis and run it a year or more...

I would have gladly let you have it

It's a peace of mind thing with me. Silly and unnecessary? Yes, but it keeps me happy.

I drained the tranny fluid @ 12000 miles and replaced it as well. Looked brand spanking new. I've often wondered just how much of a contributing factor humidity and extreme temperatures are on fluid life and contaminants; not just while operating, but while parked as well. The Mustang is a garage queen. In all my time in my house the garage has never gotten below 45 degrees. Even with the temperature hovering around zero those few days back. In winters where the roads weren't salted to death and I took the car out, I always warmed it up for a few minutes with the garage door just slightly open so as to not have CO2 gas accumulate.

Currently the Joe Gibbs HR3 I run in the Cat has around 1250 PPM zinc. The old formula was over 1400..... I still have a few bottles of that laying around. I've let that stuff go for a year. I think after it warms up after this winter I'm gonna change it though. A few months early, but I drove the hell out of her this past summer after finally getting the entire cooling system squared away.

I'm sick of having the fuel pressure jacked up to the moon to feed the 24's I have too. 30's are going in. They'll be a good fit at stock pressure.