Frequently asked questions - Expert Service Varna

Frequently asked questions

A good time to rotate your tires is when you get the oil changed or every 10,000 km. Regular rotation of tires is the best way to prevent premature wear and to increase the total mileage.

Yes! Not replacing the timing belt in time can cause great damage to the engine. The cost of subsequent repairs is much higher than that required for the replacement of all belts and pulleys.

There are many different sensors and computerized components that control engine performance and regulate its emissions. When one of these components fails, the "check engine" light comes on. Although it may seem there is nothing wrong with the car, it is important to find out what caused the warning light to come on, so as to prevent a long-term problem.

This is a very serious problem - if you allow your car to overheat for too long, it may suffer serious damages. You should find as soon as possible a safe place to pull off the road and turn off the engine! Do not try to check the fluid level in the radiator; the hot liquid can cause you severe burns. The best thing you can do at this point is call Expert Service.

Oil change interval largely depends on oil type. Vehicles using mineral oils usually require 10,000 km oil change interval. When using semi-synthetic oil, oil change should be performed at 10,000-12,000 km. Synthetic oils allow you to stretch the interval before needing a change - 15,000 km. For low mileage vehicles you should change the oil once a year.

This specific oil color is indicative of the presence of coolant in it. The reasons may be different, but most often it is a head gasket failure or a crack in one of the components of the engine. In such cases, you can not continue driving the vehicle.

Synthetic motor oils can be an appropriate choice for high-powered vehicles, or such with a turbo or supercharger. They are suitable for vehicles used for towing (especially in hot weather) and vehicles operated in extremely cold or hot climates. Although synthetic motor oil is more expensive than mineral-based motor oil, it can improve your fuel economy and ensure longer intervals between changes.

The fuel system consists of many elements and normal engine operation depends on their proper function. You should bear in mind that each liter of fuel may contain even a minimal amount of pollutants. Filters are installed in the fuel system to remove solid contaminants, water, paraffin which crystallizes in the fuel, organic elements, and sludge. To ensure reliable and trouble-free operation of the engine, you should replace the fuel filter at every oil change or as recommended in the vehicle’s owner manual.

Just remove the blown fuse, and install a new one in its place. Make sure to note the amp rating and match it - each fuse is different and the amp rating is marked on the fuse itself. If the fuse continues to blow immediately after you replace it, there might be a serious problem and it is best to consult a specialist.