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---------------------------- Forwarded with Changes --------------------------- From: rlhowell@ix.netcom.com at SMTPGATE Date: 1/13/97 3:22PM To: Toby Erkson at HFCCM5 Subject: Re: Synthetic oil information needed ------------------------------------------------------------------------------- FYI. I sent this off directly to Red Line last week and here is the whole reply from Roy Howell <rlhowell@ix.netcom.com>. Toby Erkson air_cooled_nut@pobox.com '72 VW Squareback 1.6L modified to 2.0L '75 Porsche 914 stock 1.8L ______________________________ Forward Header __________________________________ Subject: Re: Synthetic oil information needed Author: rlhowell@ix.netcom.com at SMTPGATE Date: 1/13/97 3:22 PM >Redline, >Could you please send me detailed information on the heat >absorption/dissipation >properties of synthetic motor oil, especially when compared to similar >conventional oils? This has become a heated debate amongst the air cooled >Volkswagen group I belong to. ... Dear Toby: Red Line Synthetic lubricants provide improved heat transfer compared to conventional petroleum lubricants. A relative estimate of the ability of a lubricant to transfer heat from a metal surface can be provided by the GM Quenchometer Test. In this test a chromized nickel ball is heated to 1625 deg F and cooled in the test oil to a temperature of 670 deg F. The period of time required to extract 955 deg F from this metal ball is referred to as the "Quench Time". A petroleum 20W50 lubricant was 21.6 seconds, Red Line 20W50 Motor Oil was 19.6 seconds (10% improvement) and Red Line 50Wt Race Oil was 18.6 Seconds (14% Improvement).Synthetics can improve heat transfer characteristics.