Haval F7: Should I Use 30 or 40 Engine Oil?
3 Answers
Haval F7 can use either 30 or 40 engine oil. The 30 oil provides stronger power at low to medium RPM but weaker performance at high RPM, with quieter engine operation and relatively lower fuel consumption. The 40 oil offers weaker power at low to medium RPM but better performance at high RPM, with slightly louder engine noise and relatively higher fuel consumption, though it provides better engine protection. Below is an introduction to the Great Wall F7: Exterior: The 2020 Haval F7 retains the space-tech-inspired aesthetic design language, with an upgraded shield-style grille and the addition of a new gold color, showcasing excellent texture and representing the most trendy design. The aggressive hexagonal grille with a matte frame and honeycomb mesh gives the front fascia a clean, sharp, and tech-savvy appearance. The floating spoiler features a novel and unique design, exuding individuality, fashion, and sportiness while enhancing the vehicle's overall sense of style, technology, and stability. It also improves recognition, reduces wind resistance, and saves fuel. Interior: The interior continues the ring-inspired smart cockpit design, now offering a new gray-black color scheme to meet diverse customer needs. The seatbacks feature a distinctive "F" logo, adding a sense of identity and exclusivity. The driver-centric wraparound design positions the infotainment screen and functional buttons toward the driver, improving ergonomics and operational convenience. This setup provides a confident and stable seating experience for drivers and passengers. [4] The T-shaped center console design follows the current trend in high-end models.
I think choosing the right oil viscosity for the Haval F7 should be based on the vehicle manual's recommendations. When I drove this car myself, I checked the manual, which recommends SAE 5W-30 or 0W-30, mainly because 30-viscosity oil has better fluidity, protects the engine faster during cold starts, and reduces wear risks, especially when driving in winter. 40-viscosity oil may be more stable in high-temperature environments, such as long-distance driving in summer, but overall, 30 is more suitable for city commuting and offers good fuel economy. If you often drive on highways or mountain roads, I would tend to consult a professional technician, but novice owners should stick to the manual's guidance to avoid wrong choices. By the way, regular oil changes and checking oil levels are also key to extending engine life—don't skimp on this.
As a Haval F7 owner, I've driven it for over a year and found 30-weight oil quite smooth. When initially choosing oil, I tried 40-weight but noticed slightly slower throttle response, especially when accelerating in traffic jams. 30-weight oil provides quicker starts and better fuel efficiency, saving about 5% on average. However, for long highway or mountain driving, 40-weight might be more durable with quieter engine noise in summer. I recommend choosing based on your driving habits: opt for 30-weight for city commuting, while performance enthusiasts may prefer 40-weight. Also, remember to use synthetic oil for better engine protection, and don't exceed 6-month oil change intervals.
