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Peugeot 308 Owners & Service Manuals

Peugeot 308: Check : Brake fluid

ESSENTIAL : Observe the safety and cleanliness recommendations .

ESSENTIAL : All personnel carrying out work on a vehicle fitted with traction batteries must have received specific electric vehicle training and be authorised to work on these vehicles (observe the regulations in force in the respective country).

ESSENTIAL : All personnel working on vehicles with a fuel cell stack must have completed the STELLANTIS training courses required to work on these vehicles (observe the regulations in force in the respective country).

ESSENTIAL : Brake fluid is toxic. Avoid contact with the skin and the eyes. In the event of contact with the eyes, rinse them immediately with copious amounts of water for several minutes.

CAUTION : Brake fluid is highly corrosive to paintwork. If any is projected onto the bodywork, clean the surface immediately.

1. Tooling

Brake fluid tester (*)

brand Reference Type
SURETEST TLF Measures the boiling point of the brake fluid
DOW AUTOMOTIVE BETATEST
FACOM TOOLS DF.16
EBT 06.1 Measures the specific gravity of the brake fluid

(*) Non-exhaustive list, refer to the catalogue "Tools and Equipment".

2. Check

Remove the brake fluid reservoir filter.

ESSENTIAL : Any contamination of the brake fluid is forbidden. The brake fluid should be clear and free from sediments or floating substances.

Check the fluid, following the instructions provided by the equipment supplier.

Checking values

Brake fluid Boiling point (minimum humidity)
DOT 3 140 °C
DOT 4 155 °C
DOT 4 + (*) 170 °C
SUPER DOT 4 180 °C
DOT 5 180 °C
(*) Brake fluid with low viscosity

N.B. : If the value checked is lower than the value for the "minimum humidity" boiling point, or within a tolerance of + 10 % of this value, replace the brake fluid (see the relevant operation).

N.B. : The DOT 4+ brake fluid (low viscosity) is particularly suitable for vehicles fitted with a ABS/ESP hydraulic block. The DOT 4+ brake fluid is compatible with the DOT 4 brake fluid.

ESSENTIAL : Use only approved and recommended hydraulic fluids.

Peugeot 308 2021-2025 (P5) Service Manual

Actual pages

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