Most car owners and repair shop personnel know that a particulate filter reduces emissions. However, most of them are unaware that diesel particulate filters require a special kind of engine oil. TOP TEC engine oils from LIQUI MOLY, the Ulm-based expert provider of engine oils and additives, fall into this category. The latest additions to this team of engine oils are TOP TEC 4400 5W-30 and TOP TEC 4500 5W-30.

Reiner Schönfelder, applications engineer at LIQUI MOLY, explains the specific requirements that need to be fulfilled by engine oils used in vehicles with a diesel particulate filter (DPF): “Even the most recently developed engine oils leave a slight residue of ash when they are burned, and this puts additional pressure on the particulate filter.” This, in turn, usually reduces the life of the filter.

TOP TEC 4400 from LIQUI MOLY is the only engine oil that can guarantee the longest possible filter life in various vehicle types with a DPF manufactured by Renault. Maximum performance is ensured, even with long intervals of up to 30,000 km between oil changes.

TOP TEC 4500 is another long-life oil. As Schönfelder explains: “This oil has a reduced HTHS viscosity, which makes it extremely thin and smooth-flowing at high temperatures. This, in turn, means your engine will run more smoothly”. The bottom line is that this oil has proven benefits in terms of cost efficiency. In one of the toughest European tests for fuel economy (CEC-L-54-T-96/MB M 111), this fuel performed more than 2.5% better than the reference oil. This product from LIQUI MOLY is particularly well suited for use in various vehicles from Mazda, Mitsubishi and Jaguar.

As well as these individual benefits, the two latest additions to the TOP TEC team also boast the same core strengths as their “team-mates”. In other words, they can be used all year round, offer impressive wear protection for a long engine life, ensure a fast supply of oil at low temperatures, and guarantee optimal oil pressure at all speeds, reliable lubrication at high and low temperatures, and an ultra-clean engine. TOP TEC 4400 and TOP TEC 4500 are both turbo tested. LIQUI MOLY advises customers that the manufacturer's instructions should always be observed.


TOP TEC 4400
Specifications and releases:
ACEA C4-08
Renault RN 0720

Available in 1 L, 5 L or 20 L cans and in 60 L or 205 L drums.

TOP TEC 4500
Specifications and releases:
ACEA C1-08
Ford WSS-M2C 934-B
LIQUI MOLY also recommends this product for vehicles for which the following specifications are required:
Mazda
Mitsubishi

Available in 1 L, 5 L or 20 L cans and in 60 L or 205 L drums.