Patent ID: 6096691
Filing Date: 2000-08-01
Classification: C10M,C10N

Abstract:
A homogeneous, oil-soluble additive concentrate which comprises:a) a minor proportion of diluent oil;b) from 10 to 30% by weight based on the weight of said concentrate of an organic sulfur-containing antiwear and/or extreme pressure agent having a sulfur content of at least about 20% by weight based on the weight of said antiwear and/or extreme pressure agent;c) from 1 to 5% by weight based on the weight of said concentrate of an ashless dispersant;d) from 2 to 8% by weight based on the weight of said concentrate of a dimethyl ester of an aliphatic phosphonic acid in which the aliphatic group has an average in the range of about 12 to about 24 carbon atoms;e) from 10 to 30% by weight of a 3-hydrocarbyl-2,5-diketopyrrolidine in which the hydrocarbyl group is an alkyl or alkenyl group having an average in the range of about 12 to about 30 carbon atoms, the weight ratio of said diketopyrrolidine to said dimethyl ester being at least 3:1 and at least sufficient to render said concentrate homogeneous at temperatures at least as low as 12.degree. C.