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5W-20 Engine Oil

5W-20 Engine Oil

5W-20 engine oil is a low-viscosity engine oil developed for modern petrol engines where reduced internal friction supports both fuel economy and emissions performance. At FIXRA, we stock fully synthetic 5W-20 oil suitable for the engines that specify it, with options from top brands like Shell and Castrol.

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Shell Helix Engine Oil Ultra Pro AF 5W-20 1L
Shell
Shell Helix Engine Oil Ultra Pro AF 5W-20 1L

Item number: 550042304

£15.09
£15.09
£15.09
Castrol Magnatec Stop-Start Engine Oil 5W-20 E 4L
Castrol
Castrol Magnatec Stop-Start Engine Oil 5W-20 E 4L

Item number: 15F9CE

£51.49
£51.49
£51.49
Castrol Magnatec Engine Oil 5W-20 E 4L
Castrol
Castrol Magnatec Engine Oil 5W-20 E 4L

Item number: 15CC57

£66.09
£66.09
£66.09
Shell Helix Engine Oil Ultra Pro AF 5W-20 5L
Shell
Shell Helix Engine Oil Ultra Pro AF 5W-20 5L

Item number: 550042300

£65.09
£65.09
£65.09

Thinner at operating temperature than the more familiar 5W-30, 5W-20 oil is specified precisely because of that difference, so it is one grade where substituting something heavier is a false economy.

Producing a stable oil at this viscosity relies on synthetic base stocks, so our 5W-20 range is fully synthetic. That means strong protection against wear and deposits despite the lighter weight, along with reliable cold-start flow. See our full fully synthetic engine oil range to compare across grades.

5W-20 is specified for a range of modern petrol engines, most notably Ford's EcoBoost units, along with various Japanese and American models. It is not a universal substitute for 5W-30, so check your owner's handbook or enter your registration in our oil finder before ordering.

Buy 5W-20 engine oil at FIXRA with free delivery on orders over £20, next-day delivery options, 60-day returns and Click & Collect available.