till setting up the flash lube I am now using approx 6 drops per minute I will report back when I ahve done more miles.At the moment
Regarding the fuel guage, now this is a right pain! There is a kit that is designed for the mercedes range but this does not work for the lexus.
The theory behind it is that it pulses the feed to the fuel gauge, I have fitted a relay that is operated by the rear brake light circuit. The relay when energised breaks the feed to the tank sender unit, the problem is that there are 2 sender units so it isnt working correctly.
Mine works as follows, the fuel gauge drops as if it is using petrol, when the low fuel light comes on I reset the guage in this way. When I start the car I hold my foot on the brake the guage is now showing empty, I then stop the car and take out the key. When I start the car next time the guage shows the true reading which in my case it is just over half full.
The process then begins again ie: the guage will drop again, with this method the guage only resets when the low fuel light comes on.
To add, during the first 1000 miles the economy and performance dropped slightly, this was rectified by resetting the pressure to 2 bar pressure. During the first 1000 miles the system beds in!
At the moment I am only driving locally and I pay 43.5p per litre, for a £26 fill I get between 210 and 240 miles
cheers
probsat