Liqui Moly Top Tec ATF 1850

Worth knowing

Among Liqui Moly fluids in the catalogue, the Ford and GM ULV specifications are named only here. It shares no code with Top Tec ATF 1800, which carries Ford MERCON LV and GM Dexron VI, and the 1800 is thicker at 100 °C: 5.7 mm²/s against 4.5 mm²/s. According to Ford, MERCON ULV is not for cars specifying MERCON V or LV, nor MERCON LV for those requiring ULV. These names are covered in the article on DEXRON and MERCON licences and the lists on ATF cans.

Top Tec ATF 1900 has almost the same figures: 19 mm²/s at 40 °C and 4.4 mm²/s at 100 °C, against 19.3 and 4.5 mm²/s. But this blue-green fluid, unlike the red 1850, is listed only under MB 236.15, so figures alone do not settle it. The data sheet describes the 1850’s use in terms of Cadillac, Chevrolet, Ford, GMC and Lincoln, although its list of recommendations, in which all ten codes come without approvals, includes BMW, PSA, Volvo and VW fluid numbers and Mazda ATF A7. For those makes the exact number in the carmaker’s documentation decides, as the data sheet itself requires.