How much oil does an EMS engine require?
Oil Capacity: 7 quarts of full synthetic oil.
EMS built engines require 7 quarts of oil, which is 1 quart more than the typical OEM capacity of about 6 quarts.
Why do EMS engines use more oil?
Our engines are built with a balance shaft delete.
Balance shafts are used by manufacturers to reduce engine vibration by spinning weighted shafts inside the engine.
In many high-performance builds, these shafts are removed to:
- Reduce rotating mass
- Reduce internal drag
- Improve engine responsiveness
- Improve reliability in high horsepower applications
When the balance shaft assembly is removed, it frees up additional space in the oil pan and oil system, which allows the engine to safely run a slightly larger oil volume.
Because of this, EMS engines require 7 quarts of oil instead of the factory 6 quarts.
Oil change procedure
When changing oil:
- Drain the existing oil completely
- Replace the oil filter
- Fill with 7 quarts of full synthetic oil
- Start the engine and allow oil to circulate
- Shut the engine off and verify the level on the dipstick
Always confirm the oil level after the engine has run.
