Hi Friends,
The car is W163 ML 2002. Steering wheel is a little hard to turn.
I previously started a thread on whether higher viscosity fluid would improve PS performance, many thought the answer was 'no'.
Today it was unusually cold outside. (No ice, no rain ) I Started the car and the Steering Wheel was shockingly very soft to turn. After driving car for 20 minutes i parked car exactly at the same place and it was hard to turn again. This is not the first time I have noticed softness on cold starts. I have experienced it many times in the past, but it was not as noticeable as now, so I just igored it.
I am currently usig ATF which has viscosity 40C- 35 mm2/s, 100C-7.6 mm2/s
PS Guy once checked pressure of pump and reported that it has reduced performace and should be replaced.
i know replacement may be an ideal solution, But if i can shift to thicker ATF and get some improvemet without having to replace pump, that would be better for me
Can you please suggest me Thicker ATF or PSF? And is it too risky to use thicker oil than OEM fluid specification in PS System ?
Regards/
The car is W163 ML 2002. Steering wheel is a little hard to turn.
I previously started a thread on whether higher viscosity fluid would improve PS performance, many thought the answer was 'no'.
Today it was unusually cold outside. (No ice, no rain ) I Started the car and the Steering Wheel was shockingly very soft to turn. After driving car for 20 minutes i parked car exactly at the same place and it was hard to turn again. This is not the first time I have noticed softness on cold starts. I have experienced it many times in the past, but it was not as noticeable as now, so I just igored it.
I am currently usig ATF which has viscosity 40C- 35 mm2/s, 100C-7.6 mm2/s
PS Guy once checked pressure of pump and reported that it has reduced performace and should be replaced.
i know replacement may be an ideal solution, But if i can shift to thicker ATF and get some improvemet without having to replace pump, that would be better for me
Can you please suggest me Thicker ATF or PSF? And is it too risky to use thicker oil than OEM fluid specification in PS System ?
Regards/