Updates on Proposed API SN PLUS Standard - Engine Builder Magazine

Updates on Proposed API SN PLUS Standard

At the Pan-American Base Oils and Lubricants Conference in Jersey City, N.J., Kevin Ferrick, Sr. Manager of the API Engine Oil Program provided an update on the proposed API SN PLUS standard.

At the Pan-American Base Oils and Lubricants Conference in Jersey City, N.J., Kevin Ferrick, Sr. Manager of the API Engine Oil Program provided an update on the proposed API SN PLUS standard. Highlights of his presentation are below.

SN PLUS Overview and Development Process

  • The SN PLUS supplement to API SN is intended to identify oils that meet API SN and provide additional protection against low-speed pre-ignition in turbocharged direct injection gasoline powered engines.
  • Development delays with GF-6 resulted in 10 automakers requesting the change to API SN standard to address low-speed pre-ignition (LSPI) problem in turbocharged direct injection gasoline engines.
  • The addition of Sequence IX LSPI test to API SN and modified API Donuts, which have been previously announced, are the only direct changes required
  • The request requires work for the IX LSPI test which is currently awaiting ASTM approval and API adoption of read across guidelines. If reformulation is necessary, Sequence IIIG and IIIH are available but read across for IIIH is not yet available. Provisional licensing is in effect for VID
  • The API Lubricants Group is now balloting the change to API 1509 to accommodate SN PLUS.

Proposed SN Description for SN PLUS:

  • API Service Category SN engine oils that also carry the classification SN PLUS are formulated to provide API SN performance and additional protection against low-speed pre-ignition for turbocharged direct injection gasoline-powered vehicles.
  • Starting June 1, 2018, oils that meet the requirements for API SN with SN PLUS or API SN with SN PLUS and Resource Conserving at the limit shown in Annex G, Table G-5, and are properly licensed may display “SN PLUS” or “Resource Conserving SN PLUS” in the lower portion of the API Service Symbol in conjunction with API SN in the upper portion.
  • Oils that satisfy SN PLUS can also effectively lubricate engines calling for API SN.  API SN with Resource Conserving, or ILSAC GF-5. API SN with SN PLUS and API SN with SN PLUS and Resource Conserving are also backward compatible to API Service Categories before API SN.

Next Steps for SN PLUS

  • Waiting on SN PLUS ballot results which close at the end of December.
  • If approved, a first licensing date will be announced, and licensees will be notified of supplement approval.
  • GF-6/API SP will then be completed which will require finalizing tests as ASTM methods. A first licensing date will then be established, and licensees will be notified of approval

On the diesel oil side of things, API CK-4 and FA-4 diesel engine oils have become readily available for the trucking, construction and agriculture industries. API has licensed approximately 654 CK-4 and 83 FA-4 oils, which ensure that the newest categories of diesel oil for use in on- and off-highway vehicles and equipment are available in the marketplace.

API CK-4 oils succeeded CJ-4 engine oils and are backward compatible diesel oils. CK-4 provides improved shear stability, oxidation resistance, and aeration control over CJ-4 in the familiar SAE 15W-40 and 10W-30 viscosity grades. Lower viscosity FA-4 oils, which meet the same performance standards as CK-4 oils, have been developed to provide engine manufacturers with a tool that will help them meet more stringent fuel economy and greenhouse gas emissions requirements.

 

You May Also Like

2025 Daytona 500 Logo Unveiled

Logo pays tribute to iconic Harley J. Earl trophy presented to winner of The Great American Race.

Daytona International Speedway has unveiled the 2025 Daytona 500 logo, paying tribute to the design roots of speed as it features the iconic Harley J. Earl Trophy front and center. Variations of Harley J. Earl awards were presented to Daytona 500 champions for decades. But, it wasn’t until 1998 that the modern Harley J. Earl Trophy featuring Earl’s Firebird I concept automobile, hand-sculpted by artist John Lajba, atop a black trioval base, was presented in Victory Lane.

SEMA Names Ryan Stutzman as New CFO

Stutzman replaces current Vice President and CFO George Afremow, who will retire in June after 12 years with SEMA.

Liqui Moly Sponsors World’s Largest Porsche 356 Gathering

Promoted annually with the seal of Porsche AG and the Official Porsche Club, the International Porsche 356 Meeting takes place on a rotating basis in several countries.

Sick Week Wins USA Today’s Readers’ Choice for Best Motorsports Race

The week-long event held throughout Florida, plays host to over 350 street cars.

NHRA Names New South Central Division Director

Johnson will oversee NHRA member tracks in Texas, Oklahoma, New Mexico, Louisiana, Arkansas and Mississippi.

Other Posts

Why Your EGR Cooler Will Fail

In this episode of AMSOIL Garage we discuss the EGR Cooler, an emissions device that reroutes exhaust gases back through the engine to be burned a second time. This device sounds like a good idea, but it can cause issues for your engine, and due to the environment the EGR Cooler is placed within, the

Pennzoil and IndyCar to Launch New Race Oil at Indy 500

Pennzoil’s new racing oil to help reduce greenhouse gas emissions throughout NTT IndyCar Series.

Pennzoil IndyCar Performance Oil
Why Oil and Fluid Analysis Makes Your Engine and Transmission Healthier

Much like a doctor’s visit for your own health, there’s no better way to understand what’s going on inside your engine and transmission than by having a fluid analysis performed. The process is not difficult, but having an expert discuss the results with you can be a game changer for the health and life of

McLaren Racing’s Zak Brown to Receive IMRRC’s Cameron R. Argetsinger Award

Zak Brown, CEO of McLaren Racing, will receive the 10th annual IMRRC Cameron R. Argetsinger Award at a gala presented by Sahlen’s, NASCAR, Watkins Glen International and IMSA, on Thursday, September 12, 2024. The dinner and presentation will be held prior to the running of the NASCAR Go Bowling at The Glen event, September 11-15,