I've got a Taurus SHO that I'm currently building a motor for. The motor will be completely rebuilt, aside from the valve just be reseated. I've got new Wiseco pistons and I'm using the stock bottom end.
Anyway, this car recently spun a rod bearing (hence the rebuild) due to some track use, and what I attribute to HOT OIL. When I spun the bearing, I was open tracking the car and the only thing that would stop my runs would be the water temp was climbing to 240F or so. At that point, I would do a cool-down lap or two to bring the engine temp down, as well as the brakes. When I spun the bearing, I knew the car was running warm, but I had two cars in my sights and wanted to pass them before calling it a day. When I let off for my cool-down lap, I turned down the heater to hear that I had spun the #5 bearing.
I did not have an oil temp gauge, but I have seen the relationship between water/oil tem on two other SHO's that see track use. The most notable is on the 'track' SHO. The water temp on that car sits around 200 - 210 degrees, but the oil will reach up to 260 before we shut down for a cool-down. This car has also spun a rod bearing, but has since had the motor rebuilt.
As for my car... It is generally a street car, but gets driven pretty hard on the street, and an occasional canyon cruise (which can be near track conditions for me). I do drive it normally most of the time on the street, but I occasionally take it up to 8,000 RPM just to feel the power. The car was only tracked once and made it through a complete day of track before spinning the bearing. On track, I was taking the motor up to 7,000 RPM regularly and probably never made it under 4k or 5k RPM.
I have been running Mobil 1 10w-30 with a 2-quart Accusump, and an AMSOIL remote/bypass filter (BMK-13). One thing I noticed is that the AMSOIL kit has brought my oil pressure down. I've never liked how small the lines were for the kit (13/32"), and now I think I'm going to get rid of it and opt for a large oil cooler (w/thermostat).
With the reading I've been doing on this forum, I'm not sure which oil I should go with. This car is also supercharged (as were the two other SHO's I referred to earlier) making 460+hp and will be making more soon, so it generates heat. I also have a massive radiator, but horrible air flow to it right now.
I think the next oil I'm going to use will be Red Line, but I'm not sure which viscosity to go with. I was thinking 0w-40 or 10w-30. Does this seem like a good choice? If not, what are your thoughts?
Here are few pictures of my damage:
Upper and lower spun bearing
Rod w/ no bearing
Rod Journal
Rod bearing shavings on the pickup screen
Tonight, I'll take some pictures of the 'good' bearings and post them. They don't look great, but the last time I drove the car was on track when I spun the bearing. I can tell some particles made it through the system as you can see it in the bearings.