Fluids

Caution

Pro Tip — Oil Analysis

It is highly recommended to take oil samples for analysis AND cut open oil filters at every oil change. This catches internal engine wear early and can prevent catastrophic failures.

Engine Oil

The Rush SR uses a shared oil system for the engine, gearbox, and clutch.

Recommended: Mobil 1 Racing 4T 10W-40

Capacity: 3 qt without filter change | 3.5 qt with filter change

Change interval: Every 8 hours

Oil Filter: K&N Performance KN-138

Note

Other oils may be used. If substituting, use a JASO MA certified oil (PAO/Ester Group IV+, Viscosity Index 170+). Summer alternatives: Klotz KV-1560R 15w-60, Motul 300V 15w-60. Check with your dealer if unsure.

Air Filter

Generation	OEM Part	Alternative
Gen I (Throttle by Cable)	Suzuki 13780-47H10	K&N SU-9915
Gen II (Drive-by-Wire)	Suzuki 13780-48K00	DNA Filter P-S10GT22-01

Differential

Recommended: Royal Purple SAE 75W-140

Capacity: 8–10 oz drain and replace (partial) | 16 oz full flush and fill

Note

Pro Tip — Differential Fill

Clock the diff so drain plugs are at 12 and 3 o’clock. Fill until fluid runs out the side (9 o’clock hole).

Brake Fluid

Recommended: AP Racing 600 Racing Brake Fluid

Or use an equivalent non-synthetic DOT 4 with a dry boiling point in excess of 570°F.

Note

Raise the rear of the car as high as possible when bleeding brakes to migrate air out of the master cylinders.

Fuel

Any 91 or 93 octane premium fuel.

E10/ethanol blends are acceptable for normal use. When storing the car for 2 months or more — especially with an ethanol blend — drain the fuel as completely as possible and refill on the day you will run.

Coolant

Recommended: Distilled water with Red Line Water Wetter

DO NOT use antifreeze or glycol-based coolants for track use. Glycol is a safety hazard if spilled on track and is not permitted.

Capacity: ~3 gallons when empty

Cold-weather storage/transport only: G40 Pink coolant at 20% mix — drain completely and refill with distilled water + Water Wetter before returning to track use.

Chain Lube

Recommended: Maxima Chain Wax

Clean chain before lubing. Use a naphtha-based chain cleaner (Maxima CS75920 or similar) — rinse thoroughly and do not let dry on chain before re-lubing.

Greases & Specialty Lubricants

Application	Specification	Recommended Product
Heim / Rod End Joints	Synthetic Lithium Complex Grease NLGI GC-LB	Lucas Red N Tacky
Ball Joints	White Lithium — Low Viscosity	Dupont Teflon White Lithium PT# D10106601
Body Pins	White Lithium — High Viscosity	WD-40 Specialist White Lithium PT# 300240
Control Cables	Dedicated cable lubricant only	PJ1 Cable Lube

Danger

Use only a dedicated cable lubricant on throttle and clutch cables. General-purpose lubricants can damage cable liners.

📥 Download: Original RAW fluid list PDF