Looks like RS is better all the way through!

PS RS & TWS are the same.


FORMULA RS
Castrol Formula RS 10W60 est une huile moteur ultra haute performance, entièrement synthétique, multigrade et spécialement conçue pour fournir une protection exceptionnelle aux moteurs très sollicités et fonctionnant à haut régime, autant sur la route que sur les circuits de compétition. Une exceptionnelle stabilité thermique ainsi qu'une faible volatilité permet un contrôle supérieur de la consommation d'huile. Formula RS est recommandée pour tout véhicule particulier à moteur 4 temps atmosphérique ou turbo, essence ou diesel roulant au carburant avec ou sans plomb. Formula RS satisfait et dépasse les normes API SJ/CF, ACEA A3-96 / B3-96, VW 501.01 et 505.00. Listé parmi les huiles spéciales de BMW et Porsche. Entièrement compatible avec l'huile minérale. Précaution : Ne convient pas aux moteurs de voitures utilitaires ou Heavy Duty

SPECIFICATIONS TECHNIQUES
CASTROL 10W60
Densité @ 20°C (kg/l) 0.86
Viscosité @40°C (mm²/s) 170.6
Viscosité @100°C (mm²/s) 24.8
Index de viscosité 178
Point d'écoulement (°C) -54
Point d'éclair (°C) 264
Sulphated Ash (% du poids) 1.28
TBN 10.6



Mobil 1 with SuperSyn™ 15W-50 can be used where SAE 15W-40, 15W-50, 20W-50, 15W, 20W, 20, 30, 40 or 50 grade viscosity is recommended.

Mobil 1 with SuperSyn™ 15W-50 is especially suitable for high-performance cars, particularly hot-running or heavily loaded vehicles and supercharged vehicles.

Mobil 1 products, race-proven under severe conditions, provide outstanding endurance and performance.

Typical Characteristics

Physical characteristics shown in the table are typical and may vary slightly.

Mobil 1 With SuperSyn™
SAE Grade 15W-50
Product Number 48120-0
API Service
Classification SL/CF
ILSAC GF-3
ACEA A3/B3/B4-02 A1/B1 and
A5/B5 A1/B1 and
A5/B5 A1/B1 and
A5/B5 A3/B3/B4-02
Gravity, API 32.5
Specific Gravity 0.863
Pour Point, °C (°F) 45° (-49°)
Flash Point, ASTM D 92, °C (°F) 255° (491°)
Viscosity Cold Cranking, cP @ °C 5,234 @
-20°
Cold Pumping, cP @ °C 14,050 @
-25°
Kinematic, cSt @ 40°C 124.7
Kinematic, cSt @ 100°C 17.4
Pumpability Limit, °C (°F) --37° (-35°)
Viscosity Index 155
Energy Conserving -- Yes Yes Yes --




Mobil 1 with SuperSyn™ 15W-50:


Flows at -45° C (-49° F), and pumps at temperatures as low as many conventional SAE 5W-30 oils.
Provides superior high-temperature protection for high-performance and high-revving cars.
Contains additional wear protection required for racing-type engines.


All Mobil 1 with SuperSyn™ products help to:


Provide outstanding protection for gasoline and light-duty diesel cars, trucks, vans and sport-utility vehicles, including those with turbocharged engines.
Provide excellent engine protection during high-temperature operation.
Extend engine life by reducing wear.
Provide faster cold starts at low temperatures and improved oil flow under these conditions.
Prevent oil breakdown; keep engines cleaner.
Reduce oil consumption.
Provide maximum reserve capacity in a motor oil.


Mobil 1 with SuperSyn™ is compatible with conventional, synthetic blend and synthetic motor oils.