Sable V6-183 3.0L DOHC VIN S MFI (1997)
FILLING THE TANK TO FULL MAY BE EFFECTIVE. ADVISE CUSTOMER TO USE THE RECOMMENDED OCTANE GRADE PER OWNER
MANUAL AND NOT A HIGHER GRADE.
Explain to the customer that this concern may be due to a low tank level of winter blend fuel combined with unseasonably warm weather. Advise
customer that filling the fuel tank to full may be effective in resolving this concern. Also, advise customer to use the recommended octane grade per their
Owner Manual and not a higher grade.
BACKGROUND
Gasolines are seasonally adjusted, meaning they have higher volatility (vaporize easier) in the winter and lower volatility in the summer. Government
mandates to improve air quality have resulted in significant changes to gasolines, such as the mandatory use of oxygenates (ethanol, methyl tertiary butyl
ether (MTBE), and others) in the winter or the reduction of Reid Vapor Pressure (RVP) in the summer. The addition of oxygenates (especially ethanol)
increases volatility while the reduction of RVP reduces volatility.
Gasoline distribution practices often do not allow branded marketers to have much control over their gasoline's volatility other than RVP. Oxygenate
(e.g., ethanol, MTBE) use is more dependent on local gasoline markets, rather than specific marketers practice. Therefore, it is difficult to recommend
specific brands to avoid volatility related complaints.
OTHER APPLICABLE ARTICLES: 91-8-13
SUPERSEDES: 96-5-4
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES:402000, 404000, 602300, 603300,
607000, 607400, 608000, 608400,
609000, 609400, 610000, 611000,
611500, 612000, 614000, 614500,
623000
