Hello, I have an old allmand brothers 425 TSB. The manual says use a “ high quality multipurpose” sae20/iso68/gl-4 and that it was filled with hydroclear 9836 at the factory. I can’t find that but I came up with Mobil delvac tractor hydraulic fluid. It’s gl-4 and is 55 cS at 40c so it’s like iso55 and it’s somewhat local and affordable.
any better ideas? Phillips66 makes powerTran its gl-4 but 10w-30 and I don’t think it’s around here.
thanks
Andrew
any better ideas? Phillips66 makes powerTran its gl-4 but 10w-30 and I don’t think it’s around here.
thanks
Andrew