Best oil & air filters?

The SAE 20 micron test might be interesting if I knew details, but the *much* better test is to simply have an oil analysis done at your preferred change interval.

 

I will trust in Toyota that they know what 's best in terms of a oil filter being to restrictive.

 

Look inside of any name brand oil filter through the screw on hole. You will notice a spring in there. That is the bypass for when the filter clogs. The smaller the particulates it filters , the sooner it clogs and completely bypasses the filtering process in order to pump oil. When this happens oil is no longer being filtered. If you really want to filter oil you should spin on a new filter between changes and top it off no matter which brand you choose.

Oil never wears out. It just gets dirty and needs to be strained. Remember Havoline? Back in the day it was recycled fossil oil. Any oil that meets the spec on the cap is fine. Synthetic gets dirty too. Spin on a new filter at 5k and run it to 10k and all will be well. You're wasting money if you change it sooner. The molecules are actually "rounder" than the old fossil oils and lubricate better.

The stuff I work on uses a silicon lubricant and is in there at 390 degrees. My next lawn mower oil change I'm going to experiment with using that just because it's old. I'm expecting the idle to increase by a hundred rpm's. The stuff I'm talking about is probably a 10 weight and is the slickest stuff I have every encountered. You can put a teaspoon full on the ground, come back in as hour, and it looks like you spilled a cup. It migrates to dry areas.

 

"Rounder" molecules? Seriously?

 

Do normal people actually think about the specication of oil filters? Most of us change the filters every 5-10k miles and throw it away.

I have more important things to worry about in my life than micron size of oil filters!

OP asks a Q and then shoots everyones replies down

 

Many buy the oil filter that's on sale.

 

I use nothing but Toyota filters.

 

Seriously. That's my understanding. Think of them like tiny microscopic ball bearings. The smoother the surface the less friction. At least thats how it was explained to me.

 

Unless you have a lubricant that uses something exotic, such as buckyballs or tungsten disulfide, roundness is probably not a factor. Motor oils are generally a mixture of long chain hydrocarbons and polyalphaolefins. These are long and mostly flat, not round. I freely admit I'm not an expert about this. My chemistry background is in plant biochemistry, not lubricants, but that's what I learned from some quick research.

 

I agree with you on the oil change. Changing the oil is the KEY!!
Have you changed you mind on using PureOne or Royal Purple oil filters, after what you said?

Sorry; I saw that you now have changed to AC Delco!!
Do you think that 10 micron oil filter might be too restrictive in the flow of oil?
Maybe Toyota knows this, and went with a 20 micron oil filter.
Remember; Toyota must be doing something right, in making a GREAT Prius!!

You can't go wrong with a Prius!!

Sure you might find a better oil filter, for a higher price.
Toyota Prius has proven itself time and time again.
The same can be said about Toyota oil.
Why pay a higher price?

You can put the Prius through many tests;
and the Prius will surprise you every time.
The Prius is just made to last!!

 

Yup! ....they seem capable of 200,000/300,000 miles......after that; you'll never know how little I really care! ....