Originally Posted By: UG_Passat
Originally Posted By: kr_bitog
The benefit of SL.6 is more on cold weather ABS application, so if that is the priority SL6 is much better than standard DOT3 or DOT 4. For track use, SUPER DOT 4 like ATF TYPE 200 may be better than standard DO3 or DOT 4.
For normal application, as mentioned by others any DOT 3 or DOT 4 should be fine.
The benefit is not for cold weather. SL.6 is a low viscosity DOT4 for ABS pumps with finer holes for the ESP system, so it reacts faster. Using a non-LV DOT 4 fluid in a ABS pump that requires LV, means a slower reaction time, which can be more fun to drive.
Yup. SL.6 is required fill on BMW. But, they also specifically say it is beneficial in low temperature environments.
http://www.ate.de/media/2320/technical_datasheet_dot_4_sl6.pdf
Quote:
This product data sheet describes the properties of the
ATE DOT 4 brake fluid SL.6 intended for use as hydraulic
fluids in brake and clutch systems of motor vehicles.
This brake fluid for hydraulic motor vehicle brake and
clutch systems is, due to its low viscosity at extremely
low temperatures, particularly well suited to brake
systems with electronically controlled hydraulic
components which require rapid modulation of the
brake pressure at the braked wheel, particularly in
systems, called “Elektronische Stabilitätsprogramm”
(ESP*) which used to prevent vehicle oversteer and
understeer.
The fluid composition is used by renowned car manufacturers
on a mass production scale.
The viscosity at –40° C is max. 700 mm²/s which is
approximately half that of many other commercially
available DOT 4 fluids and thus meets the requirements
of ISO specification 4925 for brake fluids with low
viscosity at low temperatures (class 6).