Deutz DQC IV-18LA

Deutz DQC IV-18LA is a lower SAPS* lubricant specification designed for use in high performance diesel and gas engines, offering extended oil drain intervals. These engines may have closed crankcase ventilation, steel pistons (TTCD) and the need for extended oil drain intervals. Most commonly this lubricant specification is used in the latest off-highway equipment meeting Stage V European emissions and US Tier 4 Final where advanced aftertreatment systems such as Diesel Particulate Filters (DPFs) are fitted.

Deutz DQC IV-18LA oils are typically SAE 10W-40, 10W-30 or 5W-30 viscosity grades, based on API Group III or Group III & Group II base oils mixtures.

The main physical and chemical requirements for Deutz DQC IV-18LA are shown below:

Requirement Method Unit Limit
HTHS viscosity at 150°C CEC L-36-A-90 cP ≥ 3.5
Sulphated Ash ASTM D874 %wt ≤ 1.0
Phosphorus ASTM D5185 %wt ≤ 0.08
Sulfur ASTM D5185 %wt ≤ 0.3
Evaporation loss (NOACK) at 250°C CEC L-40-93 % ≤ 11
Total Base Number ASTM D2896 mg KOH/g ≥ 7


Deutz DQC IV-18LA is usually grouped with a range of other approvals. The most frequently seen approvals claimed in conjunction with Deutz DQC IV-18LA are ACEA E6, API CK-4/CJ-4, MB 228.51, MAN M3677/M3477 &/or M3775, Scania Low Ash/LDF-4, MTU Type 3.1, Volvo VDS-4.5 (or VDS-4) and CES 20086 (or CES 20081).

For more information on Deutz DQC IV-18LA oils, contact your Lubrizol representative.

*Sulphated Ash, Phosphorus & Sulfur