Keep the Roadster’s main traction battery running cool and healthy with a professional coolant system flush and refill.
We completely evacuate the aging coolant, purge trapped air, and refill with the correct Sierra propylene glycol (PG) 50/50 mix to restore proper thermal performance and protect the pack from heat-related stress.
The Roadster’s ~1000-lb multi-cell Li-ion battery relies on a closed-loop liquid circuit to pull heat away during charging and spirited driving. As coolant ages, its corrosion protection, pH balance, and thermal efficiency degrade, and air pockets can form. A scheduled 4-year coolant replacement (Tesla guidance, regardless of mileage) helps maintain even temperature across the pack, reduces risk of localized hot spots, and supports long-term battery health and reliability.
| Spec | Detail |
| Application | Tesla Roadster 1.5 / 2.x — main battery coolant circuit (ESS cooling loop) |
| Service Type | Complete coolant drain, system flush, refill, and bleed using Roadster-specific procedures |
| Coolant Used | Sierra antifreeze coolant-PG, 50/50 mix of distilled water and full-strength – Sierra propylene glycol — no other coolant types mixed |
| Interval | Every 4 years regardless of mileage (per Tesla coolant service guidance) |
| Inspection | Check coolant tank, hoses, visible fittings, and pump area for leaks, discoloration, and degradation |
| Verification | Confirm proper fill level, circulation, and absence of visible air pockets; verify temperature behavior under operation |
| Warranty | 1-Year workmanship warranty — backed by Gruber |
