BerryCookies
New member
Hello all!
Last month I got a 2007 GP with Dualogic Selespeed gearbox in a rather decent shape for 147k miles, although per previous owner's words the car spent about three years in an open parking lot without any use at all, so I've been changing parts that could degrade naturally over time (belts, brake hoses etc.).
That's when I stumbled upon a fact that the gearbox hydraulic system lacks a significant amount of fluid, almost two times below the MIN mark;
(level after pump builds up the pressure)
Surprisingly, in a short time I've driven my GP I never encountered a gearbox error or spontaneous gear change, not even jerks during shifting. Since all my previous cars were manual, I have absolutely zero knowledge about semi-auto transmission maintenance, and looking through some threads on the subject, including this and this one, so far I didn't find a definite answer whether you absolutely have to depressurize if it's a simple top up procedure. Some say you have (either using multiecuscan or unplugging the pump and switching gears until the low pressure error pops up), some say you don't if the fluid is still visible in the tank, and not gone completely during operation.
So, is it okay to simply add the missing amount if I don't need to drain the system completely? (last CS Speed fluid change was around 2017-18 along with hydraulic accumulator repair according to service records) Or is the tank pressured at all times as well?
For comparison, this is the level after ~16 hours of leaving the car alone. I intend to fill it to somewhere inbetween the MIN and MAX marks just in case there's more fluid in the system. Unless it's contaminated or bad of course; if it is I'll simply take it to a local workshop.
Last month I got a 2007 GP with Dualogic Selespeed gearbox in a rather decent shape for 147k miles, although per previous owner's words the car spent about three years in an open parking lot without any use at all, so I've been changing parts that could degrade naturally over time (belts, brake hoses etc.).
That's when I stumbled upon a fact that the gearbox hydraulic system lacks a significant amount of fluid, almost two times below the MIN mark;
(level after pump builds up the pressure)
Surprisingly, in a short time I've driven my GP I never encountered a gearbox error or spontaneous gear change, not even jerks during shifting. Since all my previous cars were manual, I have absolutely zero knowledge about semi-auto transmission maintenance, and looking through some threads on the subject, including this and this one, so far I didn't find a definite answer whether you absolutely have to depressurize if it's a simple top up procedure. Some say you have (either using multiecuscan or unplugging the pump and switching gears until the low pressure error pops up), some say you don't if the fluid is still visible in the tank, and not gone completely during operation.
So, is it okay to simply add the missing amount if I don't need to drain the system completely? (last CS Speed fluid change was around 2017-18 along with hydraulic accumulator repair according to service records) Or is the tank pressured at all times as well?
For comparison, this is the level after ~16 hours of leaving the car alone. I intend to fill it to somewhere inbetween the MIN and MAX marks just in case there's more fluid in the system. Unless it's contaminated or bad of course; if it is I'll simply take it to a local workshop.
