:encouragement:
I really wonder of which CTSC the maintenance sheet with oil advice of 20W-50 is then...
Document 11.7.05
SUPERCHARGER MAINTENANCE
To insure that your Comptech Supercharged NSX keeps performing at optimum levels for as long as you own it, there are a number of simple maintenance items that need to be addressed at intermittent intervals. It is also very important to keep up on these maintenance items so as not to potentially void your Comptech warranty.
• SUPERCHARGER OIL LEVEL: The supercharger has a self-contained oiling system, and the oil level needs to be checked typically at every fuel fill-up, just as you would the engine oil. This is accomplished via a large silver screw or black knob on the top of the supercharger case. You should maintain approximately 1” of coverage on the dip stick with high quality fully synthetic 20-50w motor oil. There is no specific mileage recommendation for changing the supercharger oil except that it should be changed when it starts to appear dirty. Since there is no drain for the supercharger, the oil needs to be pumped out of the fill hole. A small electric pump or a modified
“turkey baster” can be used to accomplish this. When refilling the supercharger with oil (3.5oz-4oz), be careful not to overfill.
NOTE: Some superchargers have a vent hole on the snout that will allow a small amount of oil to accumulate in that area. This is nothing to be alarmed about, unless it seems excessive (oil overfill), and can be easily wiped off.
Based on the 20W50 mentioned in this maintenance manual (again, I do not know if this is a manual for the whipple or the autorotor version!!) but also on the advice of NSXOTIC911 and ONSOKU I put in:
15W-50 Mobil1
The SC rumble is a lot quiter now