Date: Sat, 6 Feb 1999 15:20:19 -0800 From: "John Weiss" <jrweissnopsamet*NOSPAM*.com> Subject: Re: 5W50 synthetic oil grade
Synthetics have a wider basic range of viscosity (e.g., some 10W-30 synthetics have no VI extenders at all), so they can be extended more readily to a wider range than conventional oils. OTOH, few if any newer cars require or recommend a 50-weight oil in summer, so I see little reason to use a 5W-50. You'd be better off using a synthetic 0W-30 in winter and 10W-40 in summer. --------------------- John R. Weiss Seattle, WA Remove *NOSPAM* from address for e-mail reply Radek wrote in message ... >Has anyone heard about problems with using the 5W50 synthetic oil? It >sounds like the perfect solution for Eastern Canada - cold winters and hot >summers. However, the old rule of thumb was to avoid oils with too wide a >range. I will be grateful for opinions and possible warnings. Thanks is >advance.
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