Testing of six engine oils in accordance with the "EPA recommended practice for testing, grading and labeling the fuel efficiency of motor vehicle engine oils" / / F. Peter Hutchins, Thomas J. Penninga
Pubbl/distr/stampa
[Ann Arbor, Mich.] : , : Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Environmental Protection Agency, , 1981