Motor Oil vs Blade Steel:

V

VorpelSword

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Dec 27, 2007
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Ever hang out at a rural feed store or a small-town auto parts store? Eventually, the small talk will vear away from weather and cops to motor oil; detergent vs non-detergent, single-grade vs multi-vis, petroleum-based vs synthetic and brand vs brand. . . .and retail price. This discussion can go on unresolved for hours., or forever for that matter.

Now just swap the feed store for any online knife forum and switch the topic from motor oil to knife steel.

Notice any substantive difference?
 
The only difference is that with knives you can end up eating the stuff.

n2s
 
Few people have enough knives of any one make and model to draw firm conclusions about that particular model, let alone a particular variety of steel. And tests on properties such as edge retention can be done hundreds of different ways. It is good to know the experiences of lots of people using knives in lots of different ways, so we can at least be pretty sure that, with decent heat treatment, S90V has better edge retention than 420.
 
Why are today's engines using 0w-20 motor oil? Somebody mentioned something about motor oil so I figured I'd inquire. Don't you think it's too light?
 
Vlade said:
Why are today's engines using 0w-20 motor oil? Somebody mentioned something about motor oil so I figured I'd inquire. Don't you think it's too light?
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better mileage results in tests........
 
jbmonkey said:
better mileage results in tests........
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Yeah but what about wear. Especially in hot climates. The book says use 0w-20 only. I don't think that's going to work out too good in 99° weather. I guess we'll see how long it takes for these new Motors to blow
 
Vlade said:
Yeah but what about wear. Especially in hot climates. The book says use 0w-20 only. I don't think that's going to work out too good in 99° weather. I guess we'll see how long it takes for these new Motors to blow
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long as gets through warranty coverage ending......

yeah wear is not great. tradeoff deal......
 
According to ChatGPT

Modern cars use lighter weight motor oil for a few reasons:

  1. Fuel efficiency: Lighter weight motor oil can improve fuel efficiency by reducing the amount of energy required to pump the oil through the engine. This can result in better gas mileage and lower emissions.
  2. Engine protection: Advances in engine design and manufacturing have allowed for tighter tolerances and better overall performance. Using lighter weight oil ensures that the oil flows more quickly and efficiently to protect the engine from wear and tear.
  3. Environmental regulations: In many regions, there are regulations that require lower emissions from vehicles. By using lighter weight motor oil, car manufacturers can help reduce the emissions that come from the engine oil.
  4. Cold weather performance: Lighter weight oil can improve engine performance in cold weather by flowing more quickly and reducing the amount of time it takes for the engine to warm up.
Overall, using lighter weight motor oil can provide a number of benefits to modern cars, including improved fuel efficiency, better engine protection, compliance with environmental regulations, and better cold weather performance. However, it is important to always follow the manufacturer's recommendations for oil weight and viscosity to ensure proper engine function and longevity.
 
jbmonkey said:
long as gets through warranty coverage ending......

yeah wear is not great. tradeoff deal......
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And how many more miles per gallon are they getting using such a lightweight oil. 1% more? What happens if you throw a little thicker oil in there? Would the dealer know?
 
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