GM 10W40 5L Engine Oil - Premium Protection for Your Opel

Purpose and Specifications

GM 10W40 5L is a premium semi-synthetic engine oil from Opel, perfect for gasoline and diesel engines, including turbocharged and multi-valve types. Its 10W40 viscosity flows smoothly at cold starts down to -25°C and stays thick up to 150°C, creating a strong protective film that cuts friction, prevents wear, and keeps your engine clean from sludge and deposits.

• 5 liters fills most Opel cars completely
• Meets ACEA A3/B3 and API SL/CF specs for reliable performance
• Ideal for hot climates, towing, or high-mileage engines over 100,000 km
• Reduces oil burn in older engines and supports up to 10,000 km or 12 months between changes

When to Use / Replace?

Use this oil in warmer weather, heavy-duty driving, or worn engines where thicker protection beats thinner oils. Replace every 8,000-10,000 km or 12 months, or sooner if towing frequently or in dusty conditions. Shelf life is 5 years unopened when stored cool and dry.

FAQ

Is GM 10W40 good for my high-mileage Opel? Yes, its thicker hot viscosity protects worn parts better, reducing leaks and burning common after 100,000 km.

Can I use it year-round? Best in mild to hot areas above 0°C; switch to 5W30 for very cold winters under -25°C.

How often to change? Every 10,000 km or yearly for normal driving; check level monthly on older engines.