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So I just put seals in the axle of my Kubota B2910. Manual calls for GL-4 or GL-5. Supertech 80W90 is GL5 which should be a better high pressure lube than the factory UDT or synthetic UDT (GL-4). I expect it had the factory load of plain UDT. I am mainly going cheap to make sure I don't have any...

Rotella T6 high oil consumption. I have two Kubota tractors and one with a Mitsubishi engine. Kubota never burned a drop using an old formulation of M1 truck and suv. Ran out of it and started using T6 5w40 and now all three burn about half a quart. I have put 5 hrs on the latest one and it has...

So most engines are cast iron, cast aluminum, with rubber hoses. So why do I need special antifreeze for my Mazda or is that all hype? What is wrong with plain old green? Seems that not changing it is worse than worrying about what to put in there. Does it matter what I use as long as it is...

Well I have been so busy in the last year and a half I did not change the oil in that time period and I checked the oil tonight and it did not read on the dip stick. I know the car burns about 1/2 quart in 7000 miles since it was new. I scratched my head and checked the log book and it was...

So I have an old Eclipse that I want to convert to R134A from R12. I know there are some oil compatibility issues. Do I have to get all the old oil out? What should I put in there. I thought old oil would break down or gum up.