Date: Mon, 25 Sep 2000 21:30:09 -0400 From: "Tom Raftery" <Tomnopsamery.com> Subject: Re: Synthetic Oil
I have wrestled with this question. In the early '80's it seemed that the synthetics were formulated in such a way as to cause seal leaking if the synthetics were used in vehicles that had any moderate amount of mileage using regular oil. The garage mechanics then all advised against switching. Lately, however, it seems that the synthetics have been reformulated and there have been a large number of users on this group who seem to have had good luck in switching with little or no leak problems. My '87 Turbo has 147,000 and I think that I may switch come this spring. However, I am going to ask my new mechanic who has a very good reputation around the Cape Cod area. I will know then, I hope. "DSJKALLEN" <dsjkallennopsamcom> wrote in message news:20000925123301.05624.00000717nopsamo1.aol.com... > Although I know this question has probably been asked a million times before, I > guess I never caught any of the threads! Has there ever been an absolute > answer to the question regarding changing to synthetic oil after using > traditional petroleum-based oils? I am sure a certain mileage point is > somewhat critical - possibly a recommendation not to switch to synthetic after > 100K??? > > I've known of other Saab owners who've switched to Mobil 1 10W30 after having > used Valvoline 10W30 petroleum-based oils for over 100K without problems. On > the other hand, I've heard of others who developed seal leaks, blow by, and > other problems by making the switch. > > I know of the technical superiority of synthetics, and their uniform molecule > make up, but just wondering about making a switch mid-stream, so to speak. > > Any conclusive answers?? > > Thanks, > Don
 |
 |
 |
 |
 |
