Engine? Motor? Both?
When you talk about a vehicle, you probably use “engine” and “motor” interchangeably. They are, however, separate components in your vehicle.
The engine is the conventional gasoline-powered internal combustion engine (ICE). It burns gas to generate power.
The motor, on the other hand, uses electricity stored in the hybrid battery pack to power the vehicle.
In a hybrid, these two systems work together, with the motor typically handling low-speed driving and the engine taking over or assisting when more power is needed. The key difference comes down to fuel: engines burn it, motors don't.
Why Hybrid Fuel Systems Are Different
Unlike fuel cell hybrid systems, which generate electricity through a chemical reaction, most consumer hybrids on Canadian roads pair a traditional combustion engine with a rechargeable battery pack. These two systems work together, so neglecting one affects the other.
PHEVs (plug-in hybrid electric vehicles) present a specific challenge. If you tend to use the electric mode, you may assume the engine oil is fine. However, oil degrades because of moisture and temperature changes, not just engine runtime. That means that time-based intervals matter just as much (if not more) as mileage.
Engine Oil – Still the Foundation
Since hybrids still use an ICE, oil changes are essential to keep your vehicle running at its best. Skipping regular oil changes increases your risk of engine damage, which can turn into a costly repair.
Oil change intervals will vary by hybrid type, oil type (synthetic vs. conventional) and manufacturer, so always check the owner’s manual for your vehicle’s exact service timing.
Hybrid engines kick in at different times during a drive, but most notably at startup and upon acceleration. However, even during cruising, the vehicle may require engine assistance. Hybrid engines also face a unique strain when the engine kicks in. This is similar to a cold start under a high load and is harder on the engine and oil than a typical cold start, making regular oil checks even more important.
Many modern hybrids with full synthetic oil can go longer between changes, but time-based intervals still apply. Your NexDrive technician can advise on the right interval and oil type for your specific vehicle.
1 Engine + 1 Motor = 2 Air Filters
A dirty engine air filter reduces fuel efficiency and places a lot of strain on the ICE. A hybrid has an additional filter to cool the battery. If either filter becomes clogged, it can interfere with energy efficiency and overall fuel economy. Filter replacement intervals vary by manufacturer, so check your owner’s manual or ask your NexDrive technician for the best service timing.
Your Hybrid’s Transmission Fluid
Hybrid vehicles use specialized transmission fluid that doesn’t degrade as quickly as that used in conventional vehicles. However, it still becomes contaminated over time and can damage internal components, resulting in unnecessary repairs.
Replacement intervals vary by vehicle, so refer to your owner’s manual for guidance. Your NexDrive technician can inspect for any issues during your regularly scheduled service visits, confirm the right fluid change interval for your vehicle, and make sure that only the specific transmission fluid for your vehicle is used to avoid internal damage.
Hybrid-Specific Maintenance for Inverter Coolant and Battery Cooling
Hybrids have a separate cooling system for the inverter, which manages the power between the battery and the motor. Degraded inverter coolant can cause the inverter to overheat and fail, which has been linked to sudden power loss while driving. This can be extremely dangerous and expensive to repair. Staying on top of this service is one of the best ways to avoid an unexpected breakdown.
The hybrid battery also has its own cooling system. A blocked air intake or a failed cooling fan can cause battery modules to overheat.
Both maintenance items are unique to hybrids. A certified NexDrive technician knows exactly what to look for and has the skills and tools to make the necessary repairs and avoid any catastrophic breakdowns.
While hybrid dual-system maintenance isn’t complicated, it does require expertise, especially for the components most drivers don’t know to ask about. A certified technician can assess oil condition, air filter, transmission fluid, inverter coolant, and battery cooling on one convenient visit.
Ready to book? Find your nearest NexDrive facility to schedule your next fuel system service and receive your VoltScore report. VoltScore is available exclusively at participating NexDrive locations and gives you a detailed report on your hybrid battery’s true condition, so you’re never caught off guard.