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Section 1 (Specifications & Drive Belt Routing): Servicing

WARNING: This page is about a different variant/trim than selected.
WARNING: Cooling system is pressurized, when engine is at operating temperature. Use caution and appropriate protective gear when servicing cooling system. Slowly and carefully release system pressure, before performing any repairs.

Coolant does not usually need replacing. In cases of larger repairs when coolant needs to be drained, new coolant must be used because old coolant has been exposed to oxidation and dirt. Flush cooling system when replacing coolant. To flush, fill system with clear water, and run engine for approximately 2 minutes. Flushing system should remove most coolant residue. Fill with a mix of clean water and manufacturer recommended coolant. See COOLING SYSTEM SPECIFICATIONS (BOXSTER)  .

Coolant to water ratio must not exceed 60%. Frost protection and cooling efficiency will decrease if the percentage of coolant is too high. For coolant to water ratio, see COOLANT MIXTURE RECOMMENDATIONS  table.

COOLANT MIXTURE RECOMMENDATIONS

Application Specification
Freezing Point
1997-2001
Down To -31° F (- 35° C) 50% Coolant
Down To -40° F (- 40° C) 60% Coolant
2002
Down To -31° F (-35° C) 50% Coolant
Down To -58° F (-50° C) 60% Coolant