
DUCKHAMS QX 9 5W-30
Full synthetic engine oil for diesel engines, API CK-4, ACEA E9. Oil change labor included in store.
Duckhams QX 9 5W-30 is a 100% fully synthetic diesel engine oil with PAO for modern Euro 5 and Euro 6 common-rail diesels fitted with DPF and SCR, and it also gives older engines better protection. The maker says it meets API CK-4 and ACEA E9.
Euro 5/Euro 6 diesels with DPF/SCR, Euro 3 engines with or without EGR and high-mileage diesels that call for 5W-30.
| Viscosity | SAE 5W-30 |
| Oil type | Full synthetic |
| Standards | API CK-4, ACEA E9, E7, E6 |
| Engine | Diesel |
| Change interval (our guideline) | 10,000 km or 6 months, whichever comes first |
| Pack sizes | 1 L · 6 L |
Oil change in store
5 storesEngine oil prices include the oil change at any of our 5 Subphaisal stores.
Home delivery nationwide
ShippingArrives in 2–7 days
Reserve now, pay in store
No deposit — reserve online and we hold your order for 7 days. Pay at the store on the day of your oil change.
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For home delivery and in-store oil changesTax invoice
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QX 9 5W-30 FAQ
What vehicles is Duckhams QX 9 5W-30 for?
Diesel engines that call for 5W-30. The maker says it is built for Euro 5 and Euro 6 diesels with DPF and SCR and also suits Euro 3 and high-mileage engines.
How often should I change Duckhams QX 9 5W-30?
We recommend every 10,000 km or 6 months, whichever comes first. If your owner's manual says sooner, follow the manual.
Can I use QX 9 5W-30 with a DPF?
Yes. The maker says it is designed for diesel engines with DPF and SCR and protects after-treatment devices from damage.
What do API CK-4 and ACEA E9 mean?
API CK-4 is a US diesel oil standard for modern diesels with exhaust after-treatment. ACEA E9 is a European heavy-duty diesel standard for engines with particulate filters that limits ash to protect the DPF.
How is QX 9 different from QX 8?
Both are 100% fully synthetic 5W-30 diesel oils. QX 9 is rated API CK-4 and ACEA E9 for engines with DPF/SCR, while QX 8 is rated ACEA A3/B4 and API SN and also suits gasoline engines. Follow the standard in your manual.
Does the price include the oil change?
Yes. The price includes the oil change at any of our 5 Subphaisal branches, or free shipping nationwide at the same price.




