Date: Thu, 13 Feb 2003 15:14:48 -0500 From: -Bob- <noemailnopsammain.com> Subject: Re: use fossil or synthetic oil?
On Thu, 13 Feb 2003 13:50:09 +0000, Grunff <grunffnopsam.com> wrote: >I've personally experienced this twice, and seen it happen to >others many times. I think the main mechanism is seal shrinkage >(mineral oil swells seals quite a lot, which compensates for >seal wear, whereas synth doesn't). My personal theory is that older motors have seal problems already but that all the gunk in your engine keeps them tight. When you clean it all out with synthetic, you have problems. Bob