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DUCKHAMS QS 5W-40

Gasoline engine oil · Full synthetic

API SPChange every 10,000 kmGasoline

Full synthetic engine oil for gasoline engines, API SP. Oil change labor included in store.

฿1,750/ 4 L

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Oil change at any of our 5 storesLabor is included in this price. Choose a store and date at checkout.

Or free home delivery nationwideSame price · 2–7 days with tracking

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DetailsSpecificationsOil change & shipping

Duckhams QS 5W-40 is a 100% fully synthetic gasoline engine oil for conventional and hybrid cars, including NGV/LPG engines, that call for 5W-40. The maker says it meets API SP.

What the maker says

LSPI protectionThe maker says it helps reduce low-speed pre-ignition (LSPI) and protects turbocharged gasoline direct injection (T-GDI) engines.

Engine and piston cleanlinessThe maker says it helps prevent sludge and deposits, limits blow-by and helps maintain engine power.

Wear protectionThe maker says it reduces friction and wear, helps fuel economy and extends engine life.

High viscosity indexThe maker says its very high viscosity index handles heat well and helps easy starting.

Best for

Gasoline cars and hybrids, including NGV/LPG and gasohol-fueled engines, that call for 5W-40.

Specifications

Viscosity	SAE 5W-40
Oil type	Full synthetic
Standards	API SP
Engine	Gasoline
Change interval (our guideline)	10,000 km or 6 months, whichever comes first
Pack sizes	1 L · 4 L

QS 5W-40 FAQ

What cars is Duckhams QS 5W-40 for?

Gasoline engines that call for 5W-40. The maker says it suits conventional and hybrid cars, turbo direct-injection engines, NGV/LPG engines and gasohol fuel.

How often should I change Duckhams QS 5W-40?

We recommend every 10,000 km or 6 months, whichever comes first. If your owner's manual says sooner, follow the manual.

How is QS 5W-40 different from QS 5W-30?

Both are 100% fully synthetic API SP gasoline oils. 5W-40 is thicker when the engine is hot, and QS 5W-30 also carries ILSAC GF-6A. Choose the grade your owner's manual calls for.

What does 5W-40 mean?

5W shows how easily the oil flows at a cold start, and 40 shows how thick it is at normal engine operating temperature. A higher number means a thicker oil.