Hi, I'm looking for a substitute motor oil to be used in some automated test stands for Caterpillar mechanical diesel fuel pumps. Our company builds and tests 6, 8, and 12 cylinder pumps - the big cast iron ones that weigh 50 to 150 lbs. The pump has a camshaft and roller lifters. It's lubed by roughly 80 psi motor oil to simulate what the engine would be supplying it with, it's run in for a few minutes while it's tested for function and adjusted to spec. The pump runs for 5 to 10 minutes on average and of course sees no combustion byproducts or high temperatures, as the oil is chilled by the test stand.
Currently the stands use Rotella T 15W-40, but it's awfully expensive at $8/gal when you don't need that kind of protection. It gradually gets diluted by the diesel substitute and full of wear metals from break-in, so it gets discarded every week or two. This gets pricey when you go through almost a barrel a week.
Does anyone know of a cheap, no-frills 40 weight oil available by the barrel that would be suitable for this application?
Thanks.
Currently the stands use Rotella T 15W-40, but it's awfully expensive at $8/gal when you don't need that kind of protection. It gradually gets diluted by the diesel substitute and full of wear metals from break-in, so it gets discarded every week or two. This gets pricey when you go through almost a barrel a week.
Does anyone know of a cheap, no-frills 40 weight oil available by the barrel that would be suitable for this application?
Thanks.
