Although relatively unknown in America, Motul products (pronounced Mo-tool) are revered internationally as the best protection you can use for racing engines, gearboxes and hydraulic systems.  We had the opportunity to use them a few years ago while doing some pro racing and were so impressed, we continued to use the fluids and lubricants afterward even though we then had to pay for them!  Here is some information on all three of the product groups we use.

Motul formulates lubricants for a huge variety of applications from motor oils specifically designed for and approved by Audi, Ford and Toyota to fork oils for racing motorcycles.  Among their vast line are the competition lubricants.  These oils, designed specifically for our purpose, are based on the ester molecule.  A friend who is a chemical engineer tells me this molecule is the best base chemistry known for producing lubricants.  Motul lubricants are 100% ester products, using both the polymer ester and complex ester molecules. These strong base stocks are then chemically modified for specific purposes with additives  creating oils with zero sheer loss and temperature resistance for stable pressure. Friction modifiers are added for increased power output.  From small, high revving engines in short races to big V-8s at Le Mans, Motul has a racing oil specific to your application.

Your racing engine is the most expensive single part of your car.  For decades we have all been using "dinosaur oils" only because nothing better was available.  Today we have the benefit of years of chemical engineering research and can use the knowledge it has produced to protect our investmentsin expensive hardware.   Motul competition oils are a bit more expensive than what you find at the local auto parts store but the slight additional cost is recovered many times over in engine life.  Select the correct viscosity for your car below.


   

	300V 0W20  Qualifying or High RPM	2 liters	$31.99
	300V 5W30 Power Racing	2 liters	$29.99
	300V 5W40 General Purpose	2 liters	$29.99
	300V  10W40 General Purpose	2 liters	$29.99
	300V  15W50  Severe Competition	2 liters	$29.99
	300V 20W60  Le Mans	2 liters	$29.99

	Motul Motylgear 75W90	1 liter	$10.99
	Motul Motylgear 80W140	2 liters	$22.99
	Motul Gearbox 80W90	1 liter	$14.99
	Motul Gear 300 75W90	1 liter	$15.99
	Motul Gearcomp 75W140	1 liter	$27.99
	Motul Motylgear 10W40  API  GL-4	1 liter	$8.99
	Motul Limited Slip 90PA	2 liters	$18.99

Racing brakes have two enemies:  heat and moisture.  It's no secret that the brakes on our race cars generate a great deal of heat.  The brake rotor is a heat storage unit intended to store the heat energy  generated in a braking zone until sufficient time is available to release it into the air.  What is not so obvious is that almost as much heat is transmitted through the pads and through the pistons to the fluid in the calipers.  In extreme cases this boils the fluid, turning much of it to a gas producing, at best, a spongy pedal.  Many years ago we had a car come into the pit at Road America with no brake pedal what-so-ever due to boiled fluid!  For this reason, it is essential to use a brake fluid with a high boiling point.

Brake fluids are hydroscopic.  That is, they absorb moisture from the atmosphere and that water content lowers the boiling point.  But even brake fluids with high boiling points are not all created equal.  Some degrade drastically with only a small water load.  Compare the statistics below sorted by dry boiling point.

	DOT #		Dry Boil		Wet Boil
Motul 660	DOT 4		617		399
AP PRF 660	DOT 4		608		311
Motul 600	DOT 4		594		421
Castrol SRF	DOT 4		590		518
AP 600	DOT 4		572		284
Wilwood 570	DOT 3		570		284
AP 551	none		540		284
ATE Super Blue	DOT 4		536		396
ATE Type 200	DOT 4		536		396
Castrol LMA	DOT 4		446		311
source: Pegasus Auto Racing

As you can see from the data, Motul 660 has the highest dry boiling point and Castrol SRF the highest wet boiling point.  The only time you can be assured of running completely dry fluid is the session immediately following a complete brake fluid flush.  Since it's obvious that we are always on the track with some amount of water in the fluid, let's look at the same list but sorted by wet boiling point.

	DOT #		Wet Boil		Dry Boil
Castrol SRF	DOT 4		518		590
Motul 600	DOT 4		421		594
Motul 660	DOT 4		399		617
AtE Super Blue	DOT 4		396		536
AtE Type 200	DOT 4		396		536
AP PRF 660	DOT 4		311		608
Castrol LMA	DOT 4		311		446
AP 600	DOT 4		284		572
Wilwood 570	DOT 3		284		570
AP 551	none		284		540

From this list it becomes apparent that Castrol SRF is the clear winner.  That is until you consider that it sells for $80 a pint!  If you are running a fast, heavy car and continually boiling the fluid, if you have installed larger rotors on that car and increased airflow to the rotors and calipers, if you are using water cooled brakes and brake fluid recirculation  --  if you have done all that and are still boiling the fluid, then we recommend Castrol SRF.  For all the rest of us Motul 600 or Motul 660 are the obvious choices.  Make your selection here.

	Motul RBF 600 Racing Brake Fluid	1/2 liter	$18.88
	Motul RBF 660 Racing Brake Fluid	1/2 liter	$28.88