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Royal Purple 75-90W
I read through that test and though Royal Purple didn't do as well in some tests it was a good performer in other tests. Some of the tests are designed to detect potential shear breakdown of conventional oil which is much less of a problem for synthetic oils.I read a gear oil review that compared like 30 gear oils, and royal purple was one of the worst actually. Go figure.
I read through that test and though Royal Purple didn't do as well in some tests it was a good performer in other tests. Some of the tests are designed to detect potential shear breakdown of conventional oil which is much less of a problem for synthetic oils.
Having said that, the Amsoil seemed to do well in all the tests. I should research this further for my upcoming gear lube change.
I think that sometimes we over pamper our trucks. I have seen vehicles in some of the undeveloped countries that spend their whole life without a change of the gear oil and nothing happens to their transmissions or gears, and some are 4x4s used daily in some of the worst conditions. In some of these places they have no idea or they cannot afford these expensive oils, and the vehicles get used and abused daily. We forget that Land Cruisers were designed originally to be used in some of the worsts environments. However we do what we can to make our vehicles to last way beyond their expected life and I believe that regardless it is Mobil One, Amsoil, Royal Purple, etc. all these oils are good enough to get the job done, it is a matter of our personal taste and loyalty to certain brands. Like Cruisedrew said, all you want is fresh, clean oil.
5 GAL bucket of the cheap s***. Just change it out more often.
amen. all those using royal purple/amsoil are so anal they are going to change it often anyway.
amen. all those using royal purple/amsoil are so anal they are going to change it often anyway.