The easiest and most reliable way of checking your domestic heating oil level is to dip a clean stick in to your tank. To avoid contamination make sure you use one that is used solely for your heating oil storage tank. Take the cap off the tank, and put the dipstick right down to the bottom of the tank. When you take the stick out, the oil will leave a mark, indicating the level of your oil.
The least effective and most unreliable ways to check your heating oil level are shining a torch in or tapping the tank. You may prefer a gauge - our OilFox smart monitor is an easy and reliable way to monitor your home heating oil level, with a simple-to-use App on your smartphone and a low level alert to let you know when your heating oil storage tank is getting low. Or you may have a watchman.
To be sure though stick with a stick! Just make sure it’s clean and don’t drop it in.
Whatever method you use, we would always recommend you don't let your level get too low so as to prevent a delivery stirring up any sediment that may have settled at the bottom of your tank.