Date: Sun, 05 Jun 2005 19:45:59 -0400 From: ma_twain <ma_twainnospamo.com> Subject: Re: warranty
J. Harris wrote: >>I have heard of sludge problems on the 4 cylinder engines ever since the >>recommended oil change interval was increased. I first heard about this >> when I had a 2000 9-3 2.0l. OTOH, I've never heard of it occurring on >>engines where the oil was changed at 5k miles religiously. >> >>-Fred W >> > > FWIW the Toyota's Camry & Highlander V6 has a notorious "sludge" problem; > there's plenty of info on their respective boards. > Almost all of the people with sludge problems in the Toyota V6 have no documentation of oil changes. Those that do have documentation have shown an ignorance of driving conditions. They refuse to acknowledge that short trips where the engine never warms up is considered severe driving conditions. They look at the manual and see the oil change interval of 10,000 miles and select that, because it is convient. They ignore the much more frequent oil change interval under severe conditions. We have a Sienna with the V6 - no sludge issues, but then I still drive my 1982 Volvo turbo and 1992 Saab 900. The secret - - -change the oil every 5,000 miles with synthetic. The Sienna is subject to frequent short trips - severe driving conditions.