4 Reasons Why I Use Synthetic Grease ONLY!
I have both dino and synthetic grease in my garage and I use BOTH! Why? Dino is cheaper! And there are applications that don't require a better grease with it's advantages.
The short, if the application is subject to water, I use synthetic. If the application requires less rolling resistance, I use synthetic. If it requires slipperiness, synthetic. If not getting thicker in cold weather is important, I use synthetic.
First the four main reasons I use synthetic grease, then the applications I use dino versus synthetic grease.
After time, though a long long time, regular grease hardens as the volatile ingredients evaporate, same as gasoline, the latter at a substantially higher rate eventually leaving a goo then a varnish. Dino breaks down with age, not synthetic. Granted, this is an inconsequential reason to use synthetic alone.
Synthetic grease is not affected by water as dino is, very important for snowblower applications. I use this on the axle where the wheels roll. I also use it for the auger zerk fittings.
Synthetic grease is slippery than dino so things roll easier. The reasoning, more applicable to synthetic oil, the molecules of dino oil are not uniform, they are irregular shapes, just globs, do they don't roll over each other easily. The molecules of synthetic oil are perfectly round and of the same size so things roll easier. Picture marbles on a table, roll your hand across the top of them, they roll, easy, in any direction. Not so for dino. I use Synthetic grease for the hexagon bar that the rubber friction disk slides on. Again for the auger's zerk fittings. I don't think the slipperiness for the auger is important as the rolling resistance is inconsequential and the space tolerance is too great.
In cold weather, synthetic grease does not thicken. This is important where things need to slide and roll easier, as for the hex friction disk bar. Again the axle and auger is not relevant for this reason. The auger is turning at such a speed that it's warming the grease not allowing it to thicken. For a test comparing dino to synthetic, leave two quarts of oil outside in 0 or 10 degree temperature overnight, the colder the more accurate this test is, the easier it is to see the difference. Pour each quart out. You will see a substantial difference in the thickness of the oil. The dino oil will be noticeable! thicker I cold weather. The synthetic will pour like it was summer. You will not notice the difference between summer or winter with synthetic. This is especially true for 85w differential and transfer case oil.
I use dino for all my grease joints on my vehicles, front end, tie rod ends, ball joints, universal joints. I use synthetic grease from a small tub for wheel bearings because they turning, revolving, and create friction. I want to reduce the rolling resistance and I want the bearings to last longer. I also use it for my mowers.
I use Synthetic oil and grease exclusively for snowblowers for the benefits and the amount I use where I could be using dino is again, inconsequential.
Hope this helps everyone and clarifies the reasoning.
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