Remember that If you open track your car, it is the same as racing, high rpm and high power for 20-30 minutes. With that in mind the bulk oil temperature is a good indicator of how hard you are working the engine, but doesn't measure the hot spots where the oil is REALLY working. That would be the camshaft and lifter interface on a flat tappet or hydraulic lifter car. The combination of high contact pressure, high speed, and it not being a journal bearing really stresses the oil. In general, using synthetic oil any time you ask that much from the engine is a cheap insurance policy. Craig Wright Eastman Kodak Co., Singapore (Mobile) 65 9053-9662 (Work) 65 4476-7220 |---------+-------------------------------> | | "Ronald Robertson" | | | <ronald.robertson@sy| | | mpatico.ca> | | | | | | 03/11/2005 10:02 AM | | | | |---------+-------------------------------> >-------------------------------------------------------------------------------------------------------------------------------| | | | To: "Ronald Robertson" <ronald.robertson@sympatico.ca>, "Shelby Mustang" <shelbymustang@carmemories.com> | | cc: | | Subject: Re: Engine oil | >-------------------------------------------------------------------------------------------------------------------------------| Great feedback so far. Looks like we have some real synthetic fans with Mobil 1 at the top of the pack. Let's hear some more opinions. Ron ----- Original Message ----- From: Ronald Robertson To: Shelby Mustang Sent: Thursday, March 10, 2005 4:06 PM Subject: Engine oil Let's start a new thread on the subject of engine oil. There are probably as many opinions as there are Shelby/Mustang lovers, but let's talk about your experience and preferences. What and who makes a good natural oil? Quaker State appears to be a high ash oil (we just opened our 351W which was fed QS and it is full of guck) Castrol GTX, which is recommended by a local restorer, is supposed to be low ash and therefore a cleaner oil. I have also heard from another afficionado that Penzzoil (although owned by Quaker State) is a different formula, and is low ash. What about synthetics? I have heard people rave and some curse them. Let's get some discussion on this subject because the warm weather is coming (hopefully soon). Ron
