Tinkerer
Senior Member
Here is part of an interesting post by an employee of dealership. It is on another website I like to read on.
"1)The reason the Hytran was discontinued is because the revised Hy-tran Ultraction formula (changed for for the Magnum CVT tractors mainly) had an acidic chemical reaction with certain hoses and internal components of the hydraulic system in the Patriot sprayers. The acid developed quickly under operating conditions with high humidity and high temperatures. It was first seen in the Rio Grande Valley and Corpus Christi areas. The acid quickly destroyed numerous wheel motors and other hydraulic components and became a huge headache to our dealerships in that area.
2) the first engineering response was a field mod program to add the anti corrosive additive. A stop-gap measure.
3) the second engineering response was to switch to 10W30 engine oil, additive not required. The properties of this engine oil are not suitable for all operating temperatures and environments in a 6300-psi system and although a bulletin was released advising dealers to go this route, it was quickly retracted through back channels... even though the bulletin itself was never cancelled or revised. Several dealerships including one of ours ordered a lot of 10W30 oil to service Patriot sprayer hydraulics and then never sold a drop of it.
4) the final solution was to switch to an existing Case Construction premium (and expensive) hydraulic fluid used in excavators.
P/N B67301 for a 5-gallon bucket. Do NOT use the special additive; it isn't needed. B67301 has a superb anticorrosion and anti-wear additive formulation; when we started using it in the Patriot sprayers, our wheel motor problems went away. And if you think your off-the-shelf AW46 spec oil is equal to the base stock and additive package that this fluid contains, go ahead and use it. Your short-term bargain savings will likely cost you some wheel motors and hydrostats in the very near future
5) you do not have to drain every last drop of Hy-tran out of your system. The amount of Hy-tran left in a 40 gallon hydraulic system is minimal and there is no chemical reaction between the Hy-tran and the excavator fluid"
"1)The reason the Hytran was discontinued is because the revised Hy-tran Ultraction formula (changed for for the Magnum CVT tractors mainly) had an acidic chemical reaction with certain hoses and internal components of the hydraulic system in the Patriot sprayers. The acid developed quickly under operating conditions with high humidity and high temperatures. It was first seen in the Rio Grande Valley and Corpus Christi areas. The acid quickly destroyed numerous wheel motors and other hydraulic components and became a huge headache to our dealerships in that area.
2) the first engineering response was a field mod program to add the anti corrosive additive. A stop-gap measure.
3) the second engineering response was to switch to 10W30 engine oil, additive not required. The properties of this engine oil are not suitable for all operating temperatures and environments in a 6300-psi system and although a bulletin was released advising dealers to go this route, it was quickly retracted through back channels... even though the bulletin itself was never cancelled or revised. Several dealerships including one of ours ordered a lot of 10W30 oil to service Patriot sprayer hydraulics and then never sold a drop of it.
4) the final solution was to switch to an existing Case Construction premium (and expensive) hydraulic fluid used in excavators.
P/N B67301 for a 5-gallon bucket. Do NOT use the special additive; it isn't needed. B67301 has a superb anticorrosion and anti-wear additive formulation; when we started using it in the Patriot sprayers, our wheel motor problems went away. And if you think your off-the-shelf AW46 spec oil is equal to the base stock and additive package that this fluid contains, go ahead and use it. Your short-term bargain savings will likely cost you some wheel motors and hydrostats in the very near future
5) you do not have to drain every last drop of Hy-tran out of your system. The amount of Hy-tran left in a 40 gallon hydraulic system is minimal and there is no chemical reaction between the Hy-tran and the excavator fluid"
