Word of caution about DOT5 - I think it is unlikely this has been used in your brake system as it is not all that common to do so.

DOT5 is chemically different with DOT4 and DOT5.1 (just to make things more confusing). Do not mix DOT5 with a DOT4 system or vice versa. (Well if you do you need to be aware of what you are doing)

https://en.wikipedia.org/wiki/DOT_5

https://en.wikipedia.org/wiki/DOT_5.1

https://en.wikipedia.org/wiki/DOT_4

Don't think of the DOT numbers in terms of the bigger the number the better your gonads are going to look! Just use what was originally recommended for the system (DOT4) unless the change to silicone has really already been made.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!