Deposit information in gasoline engines: Part I. Base oil effects in sequence VE deposits
Journal Article
·
· Lubrication Engineering
OSTI ID:186172
- Lubrizol Corporation, Wickliffe, OH (United States)
Base oil effects on sludge and deposit formation in the ASTM Sequence VE were studied with blends made using the same American Petroleum Institute (API) SG performance package and the same viscosity improver. One percent of the dispersant was removed from the formulation to accentuate base oil effects. Nine tests on six different 100N base oils were run. Sequence VE test lubricant drain analyses show differences in insolubles, viscosity, and particle size with base stock variations. The most significant base oil factors which can be used to predict Sequence VE sludge ratings are the base oil saturate content, polar content, and volatility. While all oils studied passed the Sequence VE API SG engine varnish and piston varnish requirements, higher levels of poly-nuclear aromatics (PNA`s) are shown to increase the severity of these ratings.
- OSTI ID:
- 186172
- Journal Information:
- Lubrication Engineering, Journal Name: Lubrication Engineering Journal Issue: 12 Vol. 50; ISSN LUENAG; ISSN 0024-7154
- Country of Publication:
- United States
- Language:
- English
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Sat Feb 28 23:00:00 EST 1981
· Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
·
OSTI ID:6472542