Biy that's a lot of reading. Can you give us the short-short version?
If you guys like the oils, read motoman engine break-in procedure. Controversial, but makes tons of sense
New Engine Break In Procedure For Cars, Motorcycles, Motocross, Snowmobiles and Boats
www.mototuneusa.com
The short ver is he doesn't make it easy for us by making a nice graph of the highest to lowest shear strength of a given oil. That'd be nice, one for gas engines, diesels, and atf. Just search for the oil of choice and read the shear strength
There are a lot of forii saying he's a shill for not revealing his secret test rig but I don't care, I've read enough of his blog to consider him legit street cred on the subject, at least way more legit than I am.
Here's his criteria;
"The Wear Protection reference categories are:
* Over 150,000 psi = SPECTACULAR wear protection
* 135,000 psi to 150,000 psi = AMAZING wear protection
* 120,000 psi to 135,000 psi = FANTASTIC wear protection
* 105,000 to 120,000 psi = INCREDIBLE wear protection
* 90,000 to 105,000 psi = OUTSTANDING wear protection
* 75,000 to 90,000 psi = GOOD wear protection
* 60,000 to 75,000 psi = MODERATE wear protection
* 50,000 to 60,000 psi = UNDESIRABLE LOW wear protection
* Below 50,000 psi = CAUTION – EXTREMELY LOW wear protection
The
HIGHER the psi value, the
BETTER the Wear Protection.
Test result differences between oils of less than 10% are not significant, and oils within that range can be considered approximately equivalent."
For the 2 quarts of gas engine oil I used here's the important bits;
1. 5W30 Quaker State “Full Synthetic” (abbreviated QSFS), dexos 1 Gen “2”, ILSAC GF-6A, API SP =
152,674 psi
$5.72 quart wallyworld
In comparison this is the oil I used for the engine restore treatment as otherwise a synthetic oil might not allow the treatment to adhere to metal as well if at all;
240. 15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM =
72,022 psi
And the synthetic mobil diesel oil comprising 3 quarts of the change after the 1k mile treatment;
234. 15W40 MOBIL DELVAC 1300 SUPER Diesel Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4/SM, SL =
73,300 psi
(I used mobil 1 delvac extreme not the delvac 1300 stuff), $22 gallon wallyworld
Note the non synthetic diesel oil I used is hardly any worse testing than the synthetic I used! That was saddening to me as I, like a lot of other deludes, think synthetics are a true gift from the tech priests (Warhammer 40k reference) and the ne plus ultra (ancient latin for "this is the ****, yo") of lubrication! I figured use the best motor oil I could find at any given walmart (lol), gas or diesel, and add at least some diesel oil to any gas oil as the diesel oil will have the detergents and surfactants and dispersants and astringents technobabble or whatever to counter the soot that the gas oils are not crafted for. I created a homogeneous mixture ratio of 2 gas to 3 diesel quarts. Next time will prolly do 4 gas to 1 diesel. Put in a Mann filter, they seem nicely constructed. All I know is the engine seems to be literally quieter than ever as far as the usual diesel rattle at idle. Is the concoction any better than anything else? Who knows!
Reported as a scammer.
