PDK, Coolant, Brake & Power Steering Fluids
Porsche Fluid Service in Stratford, CT
Beyond oil changes, Porsche vehicles require periodic fluid service for the transmission (PDK or manual), cooling system, brake system, and power steering. Each fluid has a Porsche-specific specification and interval. We perform complete flushes — not just top-offs — using factory-approved fluids.
Gold Meister Certified · PIWIS Equipped · OEM Specifications
Why This Matters on a Porsche
PDK transmission fluid is one of the most commonly skipped services. Porsche labels it as "lifetime fill," but independent specialists know the fluid degrades — especially under spirited driving or track use. We recommend PDK fluid and filter change at 60,000 miles or every 6 years. The cooling system uses Porsche-specific G12++ or G13 coolant that cannot be mixed with conventional green coolant — mixing causes silicate gel formation that clogs heater cores and radiators.
Model-Specific Details
911 (997-992)
PDK fluid: 60K mi. Coolant: 40K mi or 4 years. Brake fluid: every 2 years. No power steering (electric assist on 991+).
Cayenne
Transfer case + front/rear diff fluids due at 60K. Coolant expansion tank prone to cracking — inspect at every coolant service.
Macan
PDK or ZF 8-speed depending on model. Transfer case fluid at 60K. Coolant service at 40K mi/4 years.
Boxster/Cayman
PDK or manual depending on model. Same fluid intervals as 911. Brake fluid critical — mid-engine heat soak.
Panamera
PDK or ZF depending on model. V8 Turbo: coolant pipes prone to failure — inspect at every coolant service.
Air-Cooled (964/993)
No coolant (air-cooled). Manual trans fluid every 30K. Brake fluid annually. Power steering uses Pentosin CHF 11S.
What's Included
- PDK transmission fluid and filter change
- Manual transmission fluid change
- Coolant flush and refill (Porsche-spec G12++/G13)
- Brake fluid flush (DOT 4/DOT 5.1)
- Power steering fluid change
- Differential fluid change (front, rear, center)
- Transfer case fluid service (Cayenne/Macan)
- Windshield washer fluid refill (included with any service)
Our Equipment
Factory-Spec Fluids
We stock Porsche-approved fluids: Pentosin CHF 11S for power steering, G12++/G13 coolant, ATF-specific PDK fluid, and ATE/Motul brake fluid. No generic substitutions.
PIWIS III Procedures
PDK fluid changes require PIWIS III to monitor fluid temperature during the fill process — the correct level is temperature-dependent. We also reset service indicators and adaptation values after fluid changes.
Dealer vs. Independent Specialist
PDK fluid service at a Porsche dealer runs $800-$1,200. Coolant flush: $400-$600. Brake fluid flush: $250-$400. We provide the same factory-spec fluids and PIWIS-guided procedures for significantly less, with the advantage of a technician who explains what each service does and why it matters.
More Than Just a Service Visit
During any fluid service, we inspect related components: hoses, clamps, seals, and heat exchangers. Coolant flush includes inspection of the expansion tank (a known failure point on Cayenne and Panamera), water pump weep hole, and thermostat operation. Brake fluid flush includes visual inspection of brake lines and caliper seals.
Why Choose Repasi Motorwerks
- Factory-approved fluids only — no generic substitutions
- Complete flush procedures — not top-offs
- PIWIS III for PDK fill level, temperature monitoring, and resets
- All differential and transfer case fluids serviced
- Gold Meister technician familiar with every Porsche fluid spec
- Competitive pricing vs. Porsche dealer
Frequently Asked Questions
- Does Porsche PDK fluid really need to be changed?
- Yes. Despite Porsche labeling it as "lifetime fill," PDK fluid degrades over time and with heat. Degraded fluid causes rough shifts, clutch slip, and accelerated wear to the dual-clutch mechanism. We recommend fluid and filter change at 60,000 miles or every 6 years — especially for cars driven spiritedly or on track.
- What coolant does a Porsche use?
- Porsche uses G12++ (pink/violet) or G13 (purple) coolant depending on model year. These are silicate-free formulations that cannot be mixed with conventional green or universal coolant. Mixing causes silicate gel formation that can clog the heater core, radiator, and water pump. We use only Porsche-approved coolant.
- How much does a PDK fluid change cost?
- PDK fluid and filter change at Repasi Motorwerks ranges from $500-$800 depending on the model. This includes Porsche-approved ATF, a new filter, and PIWIS-guided fill procedure to ensure correct fluid level at operating temperature. Porsche dealers charge $800-$1,200 for the same service.
- How often should I change Porsche brake fluid?
- Every 2 years regardless of mileage, per Porsche's recommendation. Brake fluid is hygroscopic — it absorbs moisture from the atmosphere. Moisture lowers the boiling point, reducing braking effectiveness under hard use. In Connecticut's humid climate, this interval is particularly important.
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