Cleaning the fluid reservoirs. How to get the discolored plastic back.

[Midlife crisis 620 0]

How to clean the fluid reservoirs?

[datzenmike 37,446]

Windshield, coolant recovery, brake and clutch masters??? Replace them. The plastic degrades internally with age and the conditions they are exposed to under the hood. I know of no way to change them back to original.

[Lozer 138]

Ive used brake cleaner to good effect. Works to get the black staining out of a brake master reservoir.