LEXINGTON, Ky. — Valvoline Inc. is introducing a formulation to protect against low-speed pre-ignition (LSPI) across its line of North American motor oils for gasoline-powered vehicles, excluding Euro formulations.
LSPI is an abnormal combustion event caused by the higher in-cylinder pressures common in newer engines, such as turbocharged and/or gasoline direct-injection (T/GDI), while operating under low-speed, high-torque conditions.
LSPI's milder effects might include engine noise or rough idle, but they also can cause catastrophic damage that results in engine failure, the company said.
Valvoline said its product meets newly approved motor oil standards before they have been implemented.
In addition to addressing LSPI, Valvoline's formulations will offer protection against excessive timing-chain wear, an issue to which GDI engines' unique combustion characteristics can contribute, the company said.
"Additive technology in motor oil formulation has been proven to help avoid LSPI, making it essential for preserving performance and reliability in newer engines," said Fran Lockwood, Valvoline chief technology officer.
"Valvoline is leading the industry by adopting formulations that prevent the harsh effects while maintaining the integrity of the oil's basic performance."