Synthetic Oils

yr2017 wrote:
None of the above: I use it for the superior lubrication, improved mileage extended changes and it will start at -30F when the dino oil will barely turn over the engine.

Pretty much my thoughts also. And while I was at it I had them put synthetic in the tranny and the differential. I see no benefit into splitting hairs about lubricants when synthetic is at least as good or better than mineral oil.

As for the vehicles - they are happy and sing a sweet tune, even my growly Audi A4. I get great mileage from the truck too.

I buy synthetic because I am into over kill.

None of the above: I use it for the superior lubrication, improved mileage extended changes and it will start at -30F when the dino oil will barely turn over the engine.

arrghh

What attributes are important to you folks?

Vaporization? A component to vaporization are temp range & flash point

Film strength? What PSI min is desired for you guys? 100,000 PSI is
my min and anything lower I consider mud hen level...

Zinc isn't the end all, but is necessary. It's performance vs temp critical

Moly is now in most 'good' engine oils...how much do you guys want in your oil?
Some has over 100x over others and some zero to not disclosed.
Particle size isn't spec'd, but assume it is in the <3 micron range.
I add my own and switching to tungsten disulfide because my moly
source retired. You guys know why the oil OEM's are now adding moly?
Has to do with 'dry' starts and running hot. Graphite okay, but does
not coat...nor has the PSI ratings of metal (moly and tungsten)

Esters and digesters, what types do you want? Newer esters do NOT soften seals
as much as the older versions. Digesters?

Oh well...no difference between preferences of badging, half ton vs higher class,
'ST' vs anything else, diesel vs gasser, etc

Snake oil and additives sell huge...yes I do use exotic metals in all of my
automotive lube's except for ATF & clutch diff's...too slippery

yr2017 wrote:
With the exception of the people living at or above 48th parallel - NONE of you should use synthetics.

Your right- but I would think one major advantage are extended drain intervals on synthetics. Also, to the best of my knowledge there are not any Dexos certified conventional oils. Blends yes, but no conventional oil.

With the exception of the people living at or above 48th parallel - NONE of you should use synthetics.

CKNSLS wrote:

ghostrider42 wrote:
Will you trust Bob?

"synthetic oil thickens less on shutdown your startup will be easier and so will the stress on your engine. This is perhaps the best thing the synthetic class has over the mineral based oils."

http://www.bobistheoilguy.com/motor-oil-104/

Even over at "bobistheoilguy" the conventional wisdom is your motor will not last any longer using synthetic over conventional. As long as you use the right spec.

And if you look at fleet stats that holds true. The California Hwy Patrol uses reclaimed oil for 100K, then taxi fleets buys those cars and put another 100K on them.
See used oil facts-
http://recycling.cityofdavis.org/hazardous-waste/used-motor-oil

Absolutely true....if you also drive and maintain your vehicle just
like Police vehicles and Taxi's...just as found in that old CS report
that so many refer to

I do NOT drive, nor maintain my vehicles just like Police vehicles
nor Taxi's

Believe I drive mine HARDER than they do

Key is that most of them do NOT turn their vehicles off as often as
I do, nor do their vehicles sit 'off' for hours or over nite, but are
kept running most of any 24 hour day.

Similar to that other poster who asked about what NASCAR engines use.
Out of context that too, as who has a 'built' engine that can turn +9K RPM's ?
With that analogy, why not use what super bikes use? They turn in the
+16,000 RPMs and their engine oil a bit more $ than most car engine oils...

You do know that 'most' of all engine wear (normal folks) is from
'dry' starts, right? That then has more weight on the oils film strength
and filter anti-drain-back valve

ghostrider42 wrote:
Will you trust Bob?

"synthetic oil thickens less on shutdown your startup will be easier and so will the stress on your engine. This is perhaps the best thing the synthetic class has over the mineral based oils."

http://www.bobistheoilguy.com/motor-oil-104/

Even over at "bobistheoilguy" the conventional wisdom is your motor will not last any longer using synthetic over conventional. As long as you use the right spec.

And if you look at fleet stats that holds true. The California Hwy Patrol uses reclaimed oil for 100K, then taxi fleets buys those cars and put another 100K on them.
See used oil facts-
http://recycling.cityofdavis.org/hazardous-waste/used-motor-oil

I only run slick 50 in my engines