CVT Fluid (Proton CVT, Punch)

CVT fluid for the Punch belt-and-pulley transmission that every automatic Iriz uses. The genuine Proton bottle (PW913967, 4 litre) is the safest choice because the wrong fluid is the fastest way to a slipping belt and a very large bill.

Change it at 60,000km or 36 months, whichever comes first, and drain and refill rather than flush. Owners report smoother low-speed behaviour after a fresh fill, but that is maintenance, not a fix for a worn belt.

One 4 litre bottle is enough for a drain and refill. A full fill takes more than that, which is why a workshop quoting two bottles for a simple service is selling you a flush you did not ask for.

Verified against Malaysian parts retailer listings naming the genuine Proton number PW913967 for Iriz, Persona VVT and Saga FLX, checked 2026-10-26. The NS-2 equivalent claim is the retailer’s, so read the bottle before you buy.