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As the S550 was just coming out, this was not the case, unless you struck under the “implied warranty” with Boss or Shelby cars. But maybe there has been a mindset change within Ford. I’ll throw some questions to them and see. It would be beneficial for others as well, anyway. If what you say...

Different driver = different degree of driving? Could be rear axle ratio+tire diameter difference? 2018/19 cal/sensors slightly different than 2016?

Where did you get that from?

The questions are: What does Ford define as "racing"? What does Ford define as "dedicated track use"? Ford directs customers to install aftermarket parts in order to sustain certain use, but also states they wont warranty the vehicle for parts related to those modifications... Take that...

There are always exceptions. And it's a gamble. Here you go, straight from the 2018/19 Mustang Owners Manual and the Ford Warranty Guidelines documentation:

Oh yeah? Good luck to anyone that takes a none-Shelby on a track day and blows their trans or engine and wants it covered under warranty.

Sounds good!

This is fluid dependent, really. With the Motul and most other DOT-4 performance fluids, I would go by 1. (first) the # of track events (days) and then 2. (second) by time on the fluid (months) for flushes. 1. At 4-5 events 2. After around 6-8 months (the longer, the more thorough of a flush)...

Good post. There HAVE been people with PP2 cars on this site getting the diff overheating warning. None of them are saying if it is this first or second warning that there apparently is. Well, not that I've seen yet. I agree, most people will go out on track and drive 7/10ths MAX. However...

Man does that GT500 proto hum! :sunglasses: Where was the name "Predator" confirmed? Looking back, it seems it was just something an "insider" stated. Is there anything more concrete with the name?

Where do you get your figures?

If someone is mechanically competant, yeah. Or if they pay a professional to install it for them, yeah. Otherwise, it’s not really “peace of mind” as you add a possible failure point to the car if not installed correctly or place the heat exchanger somewhere vulnerable to elements... I get what...

Track vs Sport: There might be something there, as in Sport the TC/SC will intevene more, which can added heat transfered through the rear brakes. A lot? No, but “something “ The thicker fluid should be helping a decent anount - What is heat? What is causing it? Friction. Whether it be fluid...

Wide tires, especially with low tread, and standing water is usually something to sober a driver up real quick, lol. Otherwise, it’s not a big issue.

Nice. I’m hoping to get out to Gingerman before the end of the season... Maybe the issue really just shows on higher speed tracks (high diff RPM)? Were you driving much different than the last outing? The fluid viscosity change and exhaust wrapping might be enough to just get the car by for...

What tracks have you been at?

Good thread on diff cooling for the S550 that isn’t forever long: https://www.mustang6g.com/forums/threads/2018-gt-pp2-rear-differential-overheating-issue.106844/

The middle picture. It looks very close to John Deer green. I’ve seen a handful in person. See my post #37

Segmenting off something you alluded to: I’ve found, mainly with autocross, but in some track situations, where you are limted/at the limit of camber and/or what can be done with roll stiffness, considering tire tread design, can sometimes require “over-tireing” more than “best practice” for...

Thanks, Billy. Great article! Too bad the temp data wasn’t able to be included. Also, I would’ve loved to see (from the track testing) the added comparison to a typical forged aluminium, “similar”-weight aftermarket wheel. I think that visual would’ve been big eye-opener... I understand why...