It also makes a difference in how much oil gets to tight spots such as
bearings, etc before the engine warms up. Running straight 30 oil in
an engine ENGINEERED for 5-20 will shorten its life. Mr. Barker's Ford
had consumption issues BECAUSE he ran straight 50 in it.
On Tue, 06 Oct 2009 08:12:22 -0400, firstname.lastname@example.org wrote:
But not true if the vehicle was always in Pheonix Arizona, Ougadougu
Berkina Faso, Livingstone Zambia or the UAE. Or at least 10,000 other
places I could name where 65 degrees F is a COLD day.
In those places, running a 50 weight oil would cause ABSOLUTELY no
problems. (Been there, Done that. Wore out the T shirt)
On Wed, 07 Oct 2009 06:51:25 -0400, email@example.com wrote:
How am I incorrect?
Prove it to me.
And what are your qualifications to dissagree? Why should I believe
you? Come on, convince me.
I'm a licenced mechanic for 36 years, and an instructor at both
secondary and post-secondary (trade) level.
Show me yours.
You see something new every day. Now we have somebody ranting
against multi-viscosity oil? It surely didn't become widespread due
to fuel economy. As someone else pointed out, it's been widely used
in autos since the 60s. All that has happened in that regard is auto
manufacturers have been going to lower weight ones over the years to
improve fuel economy.
Also, if it doesn't make any difference, it's kind of funny auto
manufacturers waste time coming up with charts that show the correct
oil weight for different climates.
not really. I've been using straight 30 in EVERY thing i own since i
started driving in '73. Been an ASE certified master auto and truck
mechanic since '79 and have never had ANY kind of major component
failure in an engine i owned EVER. And they never get driven less than
about 180 - 200k miles before i get rid of them . And with the
exception of the 400 ford i mentioned before that was worn out when i
got it, I've never had oil consumption issues with any vehicle either.
Oil is oil as long as it is kept changed regularly. Period.
At -40, a 20W weight oil is thick like tar and starting is VERY
difficult. A 1969 Dodge slant six would not turn over - after an hour
with heat, it finally started and blew the oil filter off.
With a 10W base oil (10W40, in fact) it started perfectly the next
morning, at -42F
I'd have hated to even think about #30 without a block heater - Which
I'm sure you used on the 400 Ford.
no block heater. if the engine is in proper tune, it makes absolutely
no difference what weight oil is laying in the oil pan. Also ran a 6.9
diesel (85) on straight 30 after ford recommended it. No problems
starting it either to go out snow plowing.
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