Parts for your 2018 Suzuki Splash-Coolant

2018 Suzuki Splash coolant: what it does and how to look after it

Coolant absolutely is relevant to a 2018 Suzuki Splash. The Splash runs a liquid‑cooled K‑series petrol engine with a radiator, thermostat and pressurised expansion tank. Suzuki technical literature for the Splash/Ritz and K10B/K12B engines (owner’s manual, workshop manual, and Suzuki Genuine Long/ Super Long Life Coolant product specifications) all describe a conventional ethylene‑glycol coolant system, including capacity, bleeding, and corrosion protection requirements. So, yes — this vehicle uses engine coolant and relies on it every time it’s driven.

In this Splash, coolant has a few key jobs: it carries heat out of the engine to the radiator, stops freezing in winter and boiling in summer, protects the alloy block, head and radiator from corrosion, and lubricates the water pump. The recommended fill is a 50/50 premix ethylene‑glycol, silicate‑free, Organic Acid Technology (OAT) coolant — typically branded as Suzuki Long Life (green) or Super Long Life Coolant (blue). Capacity is around the mid‑4‑litre range depending on engine/market, always verify in the owner’s manual or the under‑bonnet label.

Service timing depends on what’s in the car. Many Splash models running Suzuki Super Long Life (blue) follow extended intervals (often up to 5 years/100,000 km for the first change, then periodic thereafter). If a standard Long Life (green) coolant is used, expect shorter intervals (commonly around 2 years/40,000–50,000 km). Because markets differ, the correct interval is the one printed in the car’s handbook or coolant label. If history’s unknown, it’s smart to replace it now and reset the clock.

• Check level cold, on flat ground. Top up only with the same premix type/colour, don’t mix types.
• Use demineralised water if a tiny top‑up is unavoidable, then correct with proper premix soon after.
• Inspect hoses, clamps and the radiator cap at each service, a weak cap upsets boiling point and can cause loss.
• When replacing, open the heater to HOT, fill slowly, and bleed air as per the workshop procedure, recheck after the first proper heat cycle.
• Discolouration, rusty sludge, a sweet smell, or creeping temps are red flags — book a flush and pressure test.

Referencing Suzuki’s owner and workshop manuals and Suzuki Genuine Coolant specs keeps the advice on‑spec for the Splash, and using quality OAT premix helps the little Suzuki stay cool across Aussie and Kiwi conditions.

FAQs

What coolant type does a 2018 Suzuki Splash use?
It’s designed for an ethylene‑glycol, silicate‑free OAT coolant. Suzuki markets this as Long Life (green) or Super Long Life (blue) premix. Stick with the same chemistry already in the system and avoid mixing colours or brands. Capacity is roughly mid‑4 litres, but confirm in the manual for the exact engine/market.

How often should the coolant be changed?
With Suzuki Super Long Life (blue) many schedules allow up to about 5 years/100,000 km before the first change, then periodic replacements. Standard Long Life (green) is typically around 2 years/40,000–50,000 km. Always follow the interval printed in the owner’s manual for your market.

Can tap water be used to top up?
Only in an emergency and only a small amount. Tap water adds minerals that can scale and corrode. The preferred top‑up is the correct premixed coolant, or demineralised water if you must — then restore the proper 50/50 premix as soon as possible.