Best Synthetic Oil and Filters

I'm surprised that PuP 0w/40 isn't on the list.

 

I've only ever used Mobil 1 synthetic oil in all my stuff. It was kinda the original synthetic oil, and I figured, the best one going. Except the motorcycle - it's a 1983 Honda air cooled engine and as such it runs way hotter than any water cooled mill, especially here in Florida. For that I use Castrol 20w50. I've always thought the conventional oil stands up to high temperature better than synthetic. Am I crazy? I don't have any scientific proof of that, only basing it on how the engine sounds idling in the summer waiting for a drawbridge. And I'm not sure I've ever seen a 20w50 synthetic.

And where can you buy Bosch filters? (other than Amazon) The auto parts stores don't seem to carry them.

 

I run an oil analysis every other change. Ive tried different synthetics and never see much difference.

Sent from my SM-S928U using Tapatalk

 

If you really want some interesting info, look into the Frantz toilet paper filters. Since only the woefully misinformed fantasize that oil makes toilet paper soggy, or ANY paper soggy, the sane among us realize the value of a very, very, very thick filter element fed a trickle of oil that it filters very thoroughly.

I ordered one of these and have yet to put it on a vehicle because the one vehicle I have knowledge of has an Amsoil bypass filter on it, and there is not a whole hollering heck of a lot of real estate under the hood.

But the one diesel truck I was working on of a friend of mine went from black oil to kinda-pale-gray oil when I put the new (first one in five years, I suspect) Amsoil bypass filter on it.

Full meaning is I changed the oil first to some Pennzoil crap and some Fram crap filter just to use it to clean out the five-year-old oil. i ran it for a day, then dumped in a gallon of diesel (into the crankcase) to further clean out the old sludge and let the engine sit and idle for a while. Revved it a few times.

Then I dumped all the new and utterly tar-black oil/diesel mix and replaced it with Amsoil, and replaced the Amsoil main filter and bypass filter at that time.

I was interested in how opaque and utterly black the one-day-old oil was after I used it to wash out the insides of the engine, coupled with some diesel.

New Amsoil, after a few days of use, was kinda pale gray, not the super-pitch-black a 300,000 mile engine often produces seconds after startup. Yup, that bypass filter works well. I look forward to seeing how the Frantz works when I install it on something. Truck owner did not want it on his truck just now.

The ultimate oil cleaning system would use centrifugal, bypass, a settling tank I guess, etc. The additives can be purchased from Frantz to refresh the actual oil at each toilet paper change.

The value of a bypass filtration system other than the long oil change intervals is the oil being cleaner at all times between said changes. This truck does not use oil noticeably and it is well over 300,000 miles on the odo.

There are other ways to clean oil on the fly, but, as I do not have them patented, Ima keep my mouth shut about them.


BTW, a reminder, unless it says "100 percent synthetic" than it is NOT legally required to be only synthetic oil. This means "full synthetic" is not required to be all synthetic oil.

You will notice that Amsoil's competitors all or almost all take advantage of this and they say "full synthetic," as in, they have SOME synthetic in there, maybe a drop or two, who knows?

I have done years of research and Amsoil comes out on top, most especially in viscosity retention over time.

Have you noticed how axle/gear lube looks like honey when new, in viscosity, but like water when old?

i used to wonder about that, but then I researched what people had studied in various brands in head-to-head comparisons with Amsoil, and found it lost the least viscosity in tests.

Some oils may do better than Amsoil in some tests, but the selfsame oil after a few hundred ours of use is often not so healthy.

Viscosity retention is key to lubricity.