Re: Off Topic question about 5W-30 Engine Oil

Posted by buickanddeere on July 10, 2005 at 11:01:14 from (192.75.48.150):

In Reply to: Re: Off Topic question about 5W-30 Engine Oil posted by hay on July 10, 2005 at 04:16:04:

You are talking the difference between 5 & 10 weights of muilti viscosity oils. That isn't enough difference to score the lawn mower's rod to the crank in 5 minutes.
As for 10W40 instead of 5W30? Any reason to have it your way instead of the manufacture's way? The oil costs the same.
I'm talking somebody using 20W50 instead of 5W30 during freezing weather in a modern vehicle or small engine. Worse yet straight 40,50 or 60 weight in cold weather and no pre-warming before loading.
On cold starts lubrication is limited and is insufficient to form an oil wedge. The time duration of operation without separating those moving metal parts is up to you.
Small bearing journal dia and small clearances require thin oil, plain and simple. A larger sized, older design , well worn engine needs thicker oil to fill those large clearances.
More isn't always better.

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• Re: Off Topic question about 5W-30 Engine Oil hay 12:56:01 07/10/05 (0)

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