| [GMCnet] Oil What are most people using - best for you.. [message #220887] |
Mon, 02 September 2013 13:39 |
fbhtxak
Messages: 191
Registered: April 2006
Karma: 0
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Senior Member |
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Matt,
Excellent counsel...
I have, since my first car, used only API certified oils, regardless of
brand. That, more often than not, has been house brands. The premium price
for nationally/internationally branded oils is due mainly to the cost of
promotion, blending of proprietary additives, what the market will pay for
"name brand" appeal, etc. In lab tests where engines have been
run-to-destruction, the "name brand" oils with claimed proprietary additives
performed no better than "house brand" API certified oils. Provided the API
service "donut" and "starburst" certification mark appear on the oil
container, there is no discernible difference in the performance of engine
oils...
During the early days of my career in the upstream oil industry, I developed
high respect for the API's enforcement of standards their industry and
individual engineers had agreed to... both on products and industry
practices.
From Blackstone Labs July'13 newsletter:
...
"What about the oil?
Notice what we have not said we take into account: the brand you're using
and whether it's synthetic or petroleum oil. When Jim
started this company back in 1985 he came up with a line he liked to use:
Oil is oil. We still stand by that today. The oil guys would
have you believe otherwise, but brand really does not seem to make a
difference in how your engine wears, or how often you can
change your oil. Well, okay, if you were using Joe Bob's Oil that he
"recycled" in the back of his filling station from emptied-out oil
pans that he filtered with a piece of cheesecloth, we might say in that case
brand does matter. But as long as you're using an
API-certified oil, your engine probably isn't going to care what you use. We
like synthetics and we like conventional oil. In the end,
what you use and how often you change your oil is completely your choice.
We'll give you our recommendation and you can do
whatever you want with it. If you want to run longer on the oil despite
having high wear, that's totally fine. And if you have great
numbers and you like changing at 3,000 miles, that's perfectly fine too.
It's your engine, your money, and your life: change it when
you want!"
...
More at
http://www.blackstone-labs.com/Newsletters/Gas-Diesel/July-1-2013.php
Fred
Fred B. Hudspeth
1978 Royale - Tyler, TX
1982 Airstream Excella 28' Mh - Cooper Landing, Alaska
Date: Mon, 02 Sep 2013 10:36:26 -0500
From: Matt Colie <matt7323tze@gmail.com>
Subject: Re: [GMCnet] Oil What are most people using - best for you..
To: gmclist@temp.gmcnet.org
Message-ID: <35ec8.5224b079@gmc.mybirdfeeder.net>
Content-Type: text/plain; charset="ISO-8859-15"
There has been a lot of discussion here and there are some serious truisms
to handle.
Synthetics don't break down with heat as easily as most dino oil.
- Our engines seldom run into that range unless you are towing and/or
mountain climbing. (Or, driving your Cadillac twin turbo at 80MPH.)
Synthetics do form glass-hard deposits in the combustion chamber if the
engine is consuming lube oil at much of any rate (like more than 1 quart per
K-mile). This is known, but the actual calibration is uncertain. So, if
you are headed for a rebuild, stay with dino.
Fact, synthetics are twice or triple the cost of good dino. ROI is still
uncertain.
The requirement for extreme pressure anti-wear additive is a know fact in
the break-in of a flat tappet engine. The requirement after break-in is
uncertain. I have no hard data here, only anecdotal, but I like it.
So,
If you have a broken-in engine, you are pretty safe running any good oil.
If you have an engine that requires frequent lube oil topping off, stay away
from synthetics.
If you have an engine that uses little oil and are paranoid, then synthetics
are comforting.
Matt - the dyno lab guy
--
Matt & Mary Colie
'73 Glacier 23 Chaumi?re (say show-me-air)
Now with 4 working Rear Brakes
SE Michigan - Twixt A2 and Detroit
**
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