The Mustang Forum for Track & Racing Enthusiasts

Taking your Mustang to an open track/HPDE event for the first time? Do you race competitively? This forum is for you! Log in to remove most ads.

  • Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!

OIL and fluids FOR THE TRACK

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Castrol SRF, BG SynchroShift II in MT-82 transmissions, Millers Oils CRX 75w140 rear axle lube and Motul 5w40 300V Competition Engine oil. Zero failures on any of these systems with over 22000 combined track miles on my 2011 Mustang GT, 2016 Mustang GT PP1 and my 2018 Mustang GT PP2 cars. And the original engine from my 2011 is still running strong and winning races in Captain Distraction's ST2 Mustang race car.
Steve
Grazie Steve.
Alessandro

Sent from my LG-H932 using Tapatalk
 

CompetitionMotorsport

What you need, when you need it, no excuses.
You ever try Driven Racing rear oil in customer cars? Results?
We use Driven Racing gear oil (75w-85) in both customer race/track cars and our own race cars, with excellent results. Generally, diff temps are a little lower (8-10 deg F) than with an over-the-counter synthetic 75W-90 gear oil. It stands up to extreme heat better than OTC oils, and used-oil analysis has shown wear to generally be lower.
 
Ok.
Bringing back this post.
I'm going to change trans fluid.
Ford asked me to provide them the fluid i want.
So some says OEM is the best. Some others switch brand.
What do you suggest?

Car is 10speed auto.
And has the stock trans cooler.

Please advice!

Alex

Sent from my LG-H932 using Tapatalk
 

CompetitionMotorsport

What you need, when you need it, no excuses.
Ok.
Bringing back this post.
I'm going to change trans fluid.
Ford asked me to provide them the fluid i want.
So some says OEM is the best. Some others switch brand.
What do you suggest?

Car is 10speed auto.
And has the stock trans cooler.

Please advice!

Alex

Sent from my LG-H932 using Tapatalk
Flyhalf, our experience with automatic transmissions is switching fluid usually does either nothing or is worse. In our race cars with AT, for example, (dirt track cars that use race-prepped auto trans), we use regular off-the-shelf transmission fluid. Factory fluid is what we'd recommend. You're far better off paying to change it more often than trying to put super-special unicorn ATF in.
 

CompetitionMotorsport

What you need, when you need it, no excuses.
I'd recommend Castrol SRF over Motul. I boiled the Motul at Sonoma. The SRF has been amazing so far. The price difference isn't as big as it appears when you consider that the SRF bottle is twice the size.
Agree 100%, Motul RBF600 has a dry boiling point similar to Castrol SRF, but a much lower wet boiling point -- the worst of both worlds. There are two good ways to go on racing brake fluid: first is SRF, which has a high wet boiling point but low dry b.p. That means it doesn't resist fade as well fresh out of the bottle, but you can leave it in longer and, as it attracts water, it maintains most of its fade resistance. The second, which we prefer, is to use a very-high dry b.p. fluid like RF1 or RBF660 and flush it more frequently (at most every three months of track use). I've attached a racing brake fluid comparison below that shows dry and wet b.p. of popular fluids, including a few that are "Racing Brake Fluid" in name only and really should be avoided.

Anecdotal evidence, like engine oil, will be all over the map. But, unlike engine oil, brake fluid is easier to identify better and not better, and it's not worth a few bucks to take risk with brakes. The heavier and more powerful the car, the more we tend toward option two, DOT4 high dry b.p. fluid changed more often. Heavy + fast = kinetic energy, which turns into heat under braking. The high dry b.p. offers a substantial cushion.
 

Attachments

  • Racing_Brake_Fluid_Comparison.jpg
    Racing_Brake_Fluid_Comparison.jpg
    144.8 KB · Views: 188

TMO Supporting Vendors

Top