Hi everybody. First time poster here. I'm interested in hearing what you all have to say in regards to what oil I should use for my application.
I'm running a Ford Modular DOHC V8 in my 1990 Mercury Cougar XR7. It is a Teksid (aluminum) block with a forged stroker rotating assembly, displacing 298 c.i. All of the bearings and piston skirts have had a DFL coating applied to them. The oil pan is baffled and features a crank scraper. The oil pump is a Melling Select HO unit. The engine has a non-intercooled twin-screw supercharger on top, pushing 10 lbs of boost. The engine runs on 93 octane pump gas, with supplemental methanol/water injection when under boost. The car is my street/strip play toy. It sees about 1000 miles per year on average, along with at least a few trips to the drag strip. I take it on at least one 300 mile long cruise per year, but I also take it out for short jaunts to the local ice cream shack or for a little cruise around the area whenever my right foot is feeling heavy.
Due to packaging constraints, I'm running a remote mount oil filter (Motorcraft FL1A), which is connected to the engine via -10AN lines. The car also has a 1 qt. oil accumulator with an electric solenoid valve and one-way flow control valve. The valves allow me to prime the engine with 1 qt. of pressurized oil from the driver's seat just before startup, while regulating the refill rate of the accumulator to prevent starving the engine for oil. I just flick the switch, wait a second to see about 25 psi on the oil pressure gauge, then hit the starter.
I used 5W-30 Valvoline All-Climate in the engine for the first 2000 miles. Afterward, I switched over to Mobil 1 Truck & SUV 5W-30 as recommended by my machinist. The engine now has just over 3000 miles on it. It doesn't use any oil or produce any significant blowby. Cold startup oil pressure in 50-90 degree F weather is in the 85-90 psi range at idle. Once the oil has warmed up, the pressure drops to 15 psi at its 650 rpm idle. Pressure reaches a max of 90-100 psi during a full throttle 7000 rpm run.
During my last oil change, I added about 1/4 of a quart of Lucas Pure Synthetic Oil Stabilizer to the 7 1/2 quarts of Mobil 1 5W-30 (which after reading here, I realize wasn't the best idea). I've noticed that it has brought my hot idle oil pressure up to 25 psi, without adding any pressure at cold startup or full throttle. I'd like to keep the hot idle oil pressure around 20-25 psi, while eliminating the Lucas from the system. From what I've read, Mobil 1's 0W-40 looks like the oil to go with, but I'm interested in your recommendations.
Sorry for the lengthy post. I just wanted to lay all of the information out there. Thank you for your time.
-Rod
I'm running a Ford Modular DOHC V8 in my 1990 Mercury Cougar XR7. It is a Teksid (aluminum) block with a forged stroker rotating assembly, displacing 298 c.i. All of the bearings and piston skirts have had a DFL coating applied to them. The oil pan is baffled and features a crank scraper. The oil pump is a Melling Select HO unit. The engine has a non-intercooled twin-screw supercharger on top, pushing 10 lbs of boost. The engine runs on 93 octane pump gas, with supplemental methanol/water injection when under boost. The car is my street/strip play toy. It sees about 1000 miles per year on average, along with at least a few trips to the drag strip. I take it on at least one 300 mile long cruise per year, but I also take it out for short jaunts to the local ice cream shack or for a little cruise around the area whenever my right foot is feeling heavy.
Due to packaging constraints, I'm running a remote mount oil filter (Motorcraft FL1A), which is connected to the engine via -10AN lines. The car also has a 1 qt. oil accumulator with an electric solenoid valve and one-way flow control valve. The valves allow me to prime the engine with 1 qt. of pressurized oil from the driver's seat just before startup, while regulating the refill rate of the accumulator to prevent starving the engine for oil. I just flick the switch, wait a second to see about 25 psi on the oil pressure gauge, then hit the starter.
I used 5W-30 Valvoline All-Climate in the engine for the first 2000 miles. Afterward, I switched over to Mobil 1 Truck & SUV 5W-30 as recommended by my machinist. The engine now has just over 3000 miles on it. It doesn't use any oil or produce any significant blowby. Cold startup oil pressure in 50-90 degree F weather is in the 85-90 psi range at idle. Once the oil has warmed up, the pressure drops to 15 psi at its 650 rpm idle. Pressure reaches a max of 90-100 psi during a full throttle 7000 rpm run.
During my last oil change, I added about 1/4 of a quart of Lucas Pure Synthetic Oil Stabilizer to the 7 1/2 quarts of Mobil 1 5W-30 (which after reading here, I realize wasn't the best idea). I've noticed that it has brought my hot idle oil pressure up to 25 psi, without adding any pressure at cold startup or full throttle. I'd like to keep the hot idle oil pressure around 20-25 psi, while eliminating the Lucas from the system. From what I've read, Mobil 1's 0W-40 looks like the oil to go with, but I'm interested in your recommendations.
Sorry for the lengthy post. I just wanted to lay all of the information out there. Thank you for your time.
-Rod