All these years I have been using Mobil 1 Full Synthetic ATF in my rack and pinion steering. It eliminated the cold start growl the factory fill GM PS fluid generated.
Apparently this Mobil 1 ATF is being discontinued and I am looking for a replacement and came across Castrol Transmax at a really good price at Costco
https://www.costco.ca/Castrol-Transmax-F....100244081.html
It is a lower viscosity oil, 5.9 cSt at 100C vs 7.4 for Mobil. Will this lower viscosity oil still work well in my truck's steering?
Apparently this Mobil 1 ATF is being discontinued and I am looking for a replacement and came across Castrol Transmax at a really good price at Costco
https://www.costco.ca/Castrol-Transmax-F....100244081.html
It is a lower viscosity oil, 5.9 cSt at 100C vs 7.4 for Mobil. Will this lower viscosity oil still work well in my truck's steering?