This week it was time to change the oil in my my Comptech Autorotor Supercharger.
And although the procedure is not difficult, I tried looking it up on this forum but could not really find a good explanation for it. So I decided to make one myself.
First to remember is that the oil in the supercharger is NOT the same oil as you use in the NSX engine.
Instead, for the Autorotor, a 20W50 oil is recommended and for this, a bought a liter of this oil to be used specifically for the CTSC. The CTSC only uses a very small amount of oil, about 110 centiliter (3.5-4.0 oz), so one bottle will last a long time.
The tools needed are very basic.
You will need a way to get the oil out of the CTSC through the same hole you use to poor in it.
I use a plastic siphon with bellow and a narrow plastic tube that I picked up in a car toolshop. Many people use a turkey baster, but I could not find one and this works just as well.
Second, I use a paper or plastic cup that I have marked with a pen at the 110CC level. If you have a kitchen scale, this can be easily done beforehand.
Third, you need a small funnel to get the oil in without spilling any.
To catch the old oil, I use an empty plastic milk bottle.
The tools:
1 liter of 20W50 oil
1 plastic ciphon with bellow and thin plastic transparent tube
1 clean paper cup which is marked at the 110 Centiliter level
1 empty plastic milk bottle
1 funnel for pouring the oil
To remove the oil, unscrew the oil dipstick on top of the supercharger and remove it.
The dipstick of the supercharger removed.
Please note that on the dipstick, there are two clear marking for high and low oil level.
Put the hose of the siphon all the way into the dipstick hole.
Make sure it reaches all the way to the bottom.
I find that when the tube is still empty, the bellow on the bottom end does not have enough power to suck the oil up. So I started with sucking the oil up myself. The clear tube makes it easy to see the dirty oil coming up and to prevent getting any of it in your mouth. Once the tube is almost full, the bellow can do its work.
Or, alternatively, you can remove the tube and blow the oil into the milk bottle yourself and repeat these steps until all oil is removed. It's only small amount after all.
I fill the paper cup with fresh oil up to the level I marked with a pen beforehand.
Poor the oil into the supercharger and wait until all oil has found its way into the CTSC.
Wipe the dipstick, insert it and check if the oil level is correct,
(If you marked the cup well, it should be about 2.5 cm (1 inch) on the dipstick.)
Wipe away any spilled oil and clean up and you are ready to go.
In all, this takes about 10-15 minutes and so it certainly is not a difficult job.
And although the procedure is not difficult, I tried looking it up on this forum but could not really find a good explanation for it. So I decided to make one myself.
First to remember is that the oil in the supercharger is NOT the same oil as you use in the NSX engine.
Instead, for the Autorotor, a 20W50 oil is recommended and for this, a bought a liter of this oil to be used specifically for the CTSC. The CTSC only uses a very small amount of oil, about 110 centiliter (3.5-4.0 oz), so one bottle will last a long time.
The tools needed are very basic.
You will need a way to get the oil out of the CTSC through the same hole you use to poor in it.
I use a plastic siphon with bellow and a narrow plastic tube that I picked up in a car toolshop. Many people use a turkey baster, but I could not find one and this works just as well.
Second, I use a paper or plastic cup that I have marked with a pen at the 110CC level. If you have a kitchen scale, this can be easily done beforehand.
Third, you need a small funnel to get the oil in without spilling any.
To catch the old oil, I use an empty plastic milk bottle.
The tools:
1 liter of 20W50 oil
1 plastic ciphon with bellow and thin plastic transparent tube
1 clean paper cup which is marked at the 110 Centiliter level
1 empty plastic milk bottle
1 funnel for pouring the oil
To remove the oil, unscrew the oil dipstick on top of the supercharger and remove it.
The dipstick of the supercharger removed.
Please note that on the dipstick, there are two clear marking for high and low oil level.
Put the hose of the siphon all the way into the dipstick hole.
Make sure it reaches all the way to the bottom.
I find that when the tube is still empty, the bellow on the bottom end does not have enough power to suck the oil up. So I started with sucking the oil up myself. The clear tube makes it easy to see the dirty oil coming up and to prevent getting any of it in your mouth. Once the tube is almost full, the bellow can do its work.
Or, alternatively, you can remove the tube and blow the oil into the milk bottle yourself and repeat these steps until all oil is removed. It's only small amount after all.
I fill the paper cup with fresh oil up to the level I marked with a pen beforehand.
Poor the oil into the supercharger and wait until all oil has found its way into the CTSC.
Wipe the dipstick, insert it and check if the oil level is correct,
(If you marked the cup well, it should be about 2.5 cm (1 inch) on the dipstick.)
Wipe away any spilled oil and clean up and you are ready to go.
In all, this takes about 10-15 minutes and so it certainly is not a difficult job.
Last edited:
