World Challenge spec SRT-4:
OIL - Redline 50W racing
Total Miles on car - 2000
Miles on Sample - 200
SAMPLE TAKEN 9/01/09
ALUMINUM 1
CHROMIUM 1
IRON 30
COPPER 180
LEAD 10
TIN 0
MOLYBDENUM 1012
NICKEL 2
MANGANESE 5
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 25
SILICON 31
SODIUM 23
CALCIUM 1393
MAGNESIUM 5
PHOSPHORUS 2538
ZINC 2454
BARIUM 0
INSOLUBLES 0.5
WATER 0
FLASHPOINT ºF 440
SUS VIS 210ºF 92.4
cSt @ 212ºF 18.56
Fuel Antifreeze 0
How does this look? After draining the Redline 50W, I put Mobil 1 15w-50 in the car this oil change and just finished one track day. Motec system logs oil pressure and my average pressure dropped from 43 psi (50w redline) to 34 psi (15w-50 M1). So I am thinking about switching back to Redline. I currently have Redline 15w-50 and 20w-50 sitting on the shelf, I am concerned the 20w-50 might be too thick so I may run the 15w-50.
-David
OIL - Redline 50W racing
Total Miles on car - 2000
Miles on Sample - 200
SAMPLE TAKEN 9/01/09
ALUMINUM 1
CHROMIUM 1
IRON 30
COPPER 180
LEAD 10
TIN 0
MOLYBDENUM 1012
NICKEL 2
MANGANESE 5
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 25
SILICON 31
SODIUM 23
CALCIUM 1393
MAGNESIUM 5
PHOSPHORUS 2538
ZINC 2454
BARIUM 0
INSOLUBLES 0.5
WATER 0
FLASHPOINT ºF 440
SUS VIS 210ºF 92.4
cSt @ 212ºF 18.56
Fuel Antifreeze 0
How does this look? After draining the Redline 50W, I put Mobil 1 15w-50 in the car this oil change and just finished one track day. Motec system logs oil pressure and my average pressure dropped from 43 psi (50w redline) to 34 psi (15w-50 M1). So I am thinking about switching back to Redline. I currently have Redline 15w-50 and 20w-50 sitting on the shelf, I am concerned the 20w-50 might be too thick so I may run the 15w-50.
-David