Cause Although there are several reasons for less than expected oil economy described in Corporate Bulletin # XXXXX one area not covered is reduced sealing ability of the rings. This rate only applies to personal use vehicles, under warranty, maintained in accordance with the appropriate maintenance schedule, with less than 58,000 km (36,000 mi), or 80,450 km (50,000 mi) for Cadillac, driven at legal speeds in an unloaded (for trucks) condition. Oil Consumption: The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946L (1 qt) in 3200 km (2000 mi). The standard for acceptable oil economy and the method for determining oil economy are outlined in Corporate Bulletin # XXXXX The following text is referenced from Corporate Bulletin # XXXXX for your convenience. The oil consumption rate and possible oil consumption areas, as per Corporate Bulletin # XXXXX dated March, 2001, should be verified prior to performing the ring cleaning procedure below. The typical customer with this condition comments on consumption in the range of 0.946L (1 qt) of oil used in 1600-2250 km (1000-1400 mi) of operation. ![]() VIN Breakpoints Condition Some customers may comment on higher than expected oil consumption. Please discard Corporate Bulletin Number 02-06-01-009B (Section 06 - Engine). Bulletin No.: 02-06-01-009C Date: OctoTECHNICAL Subject: Higher than Expected Oil Consumption (Clean Piston Rings) Models: 1996-2000 Cadillac Concours 1996-2002 Cadillac Eldorado 1996-2003 Cadillac DeVille, Seville with 4.6L Engine (VINs Y, 9 - RPOs LD8, 元7) Supercede: This bulletin is being revised to add parts information.
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