June 12th, 2018

The New API Motor Oil Specification

API SN Plus is a new motor oil specification developed for turbocharged engines that was developed in response to automobile manufacturer requests for a motor oil that protects against low-speed and pre-ignition (LSPI). LSPI is an engine issue present in turbocharged gasoline direct injection engines, and can be alleviated by changing the motor oil formulation.

What is Low Speed Pre-Ignition (LSPI)

LSPI is an unusual combustion incident at low engine speeds. It is caused when fuel and air mixes in the combustion chambers and ignites before the normal spark timing. LSPI can cause many issues, some examples are engine knock, broken spark plugs, cracked pistons, and in severe cases catastrophic engine failure. There are a couple thoughts on what exactly causes LSPI, but it is widely accepted that motor oils play a role. Testing has shown that during LSPI, oil in the cylinder may be mixing with fuel which creates hot spots in the combustion chamber. Creating ignition before timing is intended to occur. Through this testing experts concluded that motor oils can be reformulated to reduce their contribution to LSPI. This is the goal of the new API SN PLUS specification.

Oilzum Synthethic Blend and Full Synthetic Motor Oils are SN Plus Approved!

Click here to contact us today about Oilzum products! Oilzum is made locally in New England in our Worcester Facility. Since 1905 Oilzum has been “The Choice of Champions” Product is available in Bulk, Drums, and Cases. 

Oilzum Motor Oil Logo over the Road

We also have Pennzoil Platinum and Gold Motor Oils that carry the API SN Plus certificate!

Pennzoil Platinum 0W20 Case

Pennzoil Platinum is powered by PurePlus® Technology. This technology converts gas to liquid, creating a high quality fully synthetic base oil. For complete engine protection, Pennzoil delivers with their full synthetic lineup. You can even take it to the next level with Ultra Platinum products!