quote:The oil gelling or sludging was in the 1997-2002 Toyota & Lexus vehicles with the 3.0 liter IMZ V-6 and 1997-2001 vehicles with the discontinued 5SFE 2.2L 4-cylinder. Ken
Originally posted by kreativ: There's been talk of oil gelling issues with the '9x-'02 Toyota V6 engine. Of the manufacturer recommended conventional oil weights of 5W-30 and 10W-30, would one of them be less likely to cause this problem?
quote:The one in the Camry still has 87 octane being the one recommended. The one in the Lexus ES (same engine except with VVT-i) has 91 octane being the one recommended. The compression ratio is the same though (10.5:1), so I haven't been able to understand why the Camry V6 and the ES would require different octane gasoline.
If you own this engine, as I do, also recall that it is designed to use 91 octane fuel. Using lower levels can exacerbate the problem, through higher cylinder head temps and poorer exhaust gas profiles.