Pentosin has this to say:
"No. You should never mix brake fluids in order to avoid dilution and contamination of the braking fluid properties.
The seals in a car's braking system are designed to work with specific fluid types. The mixing of conventional glycol brake fluids and synthetic brake fluids must be totally avoided. The fluid types are not miscible (they will not mix together). This leads to system contamination and subsequently the brake seals and hoses begin to deteriorate - which can catastrophically impact braking performance. In addition to compromising passenger safety, mixing brake fluid types will necessitate that the seals and hoses are replaced at a sizeable expense to the vehicle owner."
http://www.pentosin.net/askourexperts.asp
But what exactly is a "conventional glycol brake fluid" and what is a "synthetic brake fluid".
"No. You should never mix brake fluids in order to avoid dilution and contamination of the braking fluid properties.
The seals in a car's braking system are designed to work with specific fluid types. The mixing of conventional glycol brake fluids and synthetic brake fluids must be totally avoided. The fluid types are not miscible (they will not mix together). This leads to system contamination and subsequently the brake seals and hoses begin to deteriorate - which can catastrophically impact braking performance. In addition to compromising passenger safety, mixing brake fluid types will necessitate that the seals and hoses are replaced at a sizeable expense to the vehicle owner."
http://www.pentosin.net/askourexperts.asp
But what exactly is a "conventional glycol brake fluid" and what is a "synthetic brake fluid".
