10 bestHeavy Duty Diesel Engine Oilof January 2026
112M consumers helped this year.
8% off
1
MANNOL MN7908-5 Energy Premium 5W-30 API SN/CF engine oil, 5 litres
MANNOL
10.0
30% off
2
Castrol EDGE 5W-30 LL Engine Oil 5L
Castrol
10.0
17% off
3
Mannol 20 Litre Energy Premium 5W-30 Engine Oil C2/C3 Universal Synthetic Ester Technology, Yellow-brown
MANNOL
9.8
5% off
4
Mannol Formula 5W30 5L
MANNOL
9.6
29% off
5
Castrol EDGE 5W-40 Engine Oil 4L
Castrol
9.3
44% off
6
LIQUI MOLY Top Tec 4600 5W-30 | 5 L | Synthesis technology motor oil | SKU: 2316
Liqui Moly
9.1
7
RS Mannol Energy 5W30 A3/B3 Fully Synthetic Engine Oil, WSS-M2C913-B, 5 Litres
RS
8.8
8
STP Engine Degreaser Professional Series 500ml, Penetrates and Dissolves Heavy Dirt and Deposits, Easily and Quickly Restore your Engine's Performance for a Smoother Engine
STP
8.5
9
MANNOL Energy Premium Fully Synthetic Engine Oil 5W-30 C3 DPF, 2 x 5 Litres
MANNOL
8.3
10
Castrol MAGNATEC 5W-40 C3 Engine Oil 5L
Castrol
8.0
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