Checking Your Engine Oil with the Volkswagen Passat Oil Dipstick
Problems with your vehicle's oil are nothing to laugh at, so it's best to do a quick check once in a while with your Volkswagen Passat oil dipstick. A lot of people have ignored the simple oil dipstick in the past, so they missed catching some simple problems that have turned into expensive headaches after sometime. Stop second-guessing and learn to troubleshoot your vehicle's oil-related problems with our handy guide.
You have to change your vehicle's oil once a year or after 10,000 miles. This may vary depending on the age of your vehicle and the oil that you use, but you can do a quick test using your oil dipstick to find out if you need to change your oil soon. Take a close look at the oil on your dipstick. Your motor oil should look glossy and semi-transparent. If it looks dirty, has grainy particles, or has sludgy deposits, then it's time for you to get an oil change quick. You may also encounter a rotten smell from it, especially when it's already thick and dark.
Bubbles or foam on your dipstick
If you notice bubbles or white foam on your Volkswagen Passat oil dipstick, then you might have a leak somewhere in your system. Most of the time, this will be from a worn-out head gasket, which could be a bad thing if it's beginning to let moisture or water into your engine's oil. If you start to experience overheating while idling or have noticed a rancid smell from your oil, then you'll need to have your head gasket checked and replaced if it is indeed leaking.
Coolant leaking into your motor oil
Apart from water, coolant may also leak into your motor oil and cause harm to your vehicle's engine. Brown bubbles or dried brown residue may collect on your dipstick, and this could indicate coolant mixing into your oil. You may even notice a sweet smell coming from your vehicle's exhaust, which is caused by burnt up coolant. Check your oil by unthreading the drain plug on your vehicle and draining the oil into a clear container. Since coolant and water would be heavier than oil, it'll sink into the bottom of the container and would look like a milky paste. Once you've detected the presence of coolant in your oil, then you'll have to have your engine serviced for repairs at once.