Will switching from Synthetic to Dyno oil harm my engine?

Yes...$115 more for the Dino regimen OR $115 less for the Mobil-1 regimen.
I already got that.

 

Hence "undollars" and "uncents".

 

Changing oil at 3000 miles in a late model car or truck is a total waste of
money. In the 50's that was okay. Oil today is much better and cars are
cleaner. save some money and oil and read your owners manual and see what
your manufacturer says. { not your dealer, he wants you back often}.
Scott

 

Yeah, it's safe.

Running an engine without oil=unsafe.

 

Ever wonder why synthetics have not caught on in the diesel arena?
Particularly in passenger car diesels which routinely foul their oil very
quickly?

 

I have an old Nissan diesel in a pickup. The manual states no more than
3,000 miles per change and if driven in severe conditions, 2,200 miles tops.
You would CRINGE to see what this engine does to its oil by 3,000 miles of
mixed freeway/town use, running Shell Rotella T. Your gasoline engines would
be sludging up badly if their oil was allowed to get this foul.

 

If our oils also carried the MB (Mercedes Benz) oil rating system on the
label, you would see that API sets the MINIMUM performance standard ... not
the actual performance level of the oil above the minimum.

 

This is a pretty manufactured comparison. As a point of fact, I have never
paid more
than $1.00 per quart of dino oil. I wait until it goes on sale. Dan is
probably only
used to buying stuff at places like NAPA and doesen't realize that the
Checkers/Kragen/Schucks
people regularly discount dino oil, sometimes down to 49 cents a quart with
rebate.

I would be happy to post scans of my last 5-6 cash register receipts that
clearly
show oil purchases at below $1.00 a quart if someone here wants to continue
the rediculous claim that dino oil costs $2.10 a quart. And this is from
this year
since I buy as many cases as I can at the $1.00 a quart cost when it does go
on sale. And this is name brand Chevron or Havoline oil also.

By contrast it is -extremely- rare for synthetic oil to be discounted - and
when it
is discounted, invariably it is only via rebate - and the fine print only
allows 1 rebate
per year per household. And also it isn't discounted much.

Ted

 

They are used regularly in the heavy truck market, however. (I also use
it in my tractor).

 

Nonsense. Put AMSOIL in an sludged up motor and see what happens.

 

What if there is no Checkers/Kragen/Schucks stores in the
vacinity?
I only recognize the name from seeing it on TV.
We've got NAPA and CarQuest and a few department stores.
The cheapest I've seen the house brand (Valvoline) at NAPA and
CarQuest is $.99 a quart.

Don't know about the Chevron but the Havoline, yeesh, what tar!
And when I say tar, I mean experience from being inside engines
that has had it's oil changed religiously every 3K miles and the
owners have used Havoline exclusively since the vehicle was new.

NAPA has Mobil 1 on sale for the month of December for $3.99 a
quart, Walmart almost always has 5 quart jugs for (IIRC) $19.88,
sometime less.

It would seem for some people, it would take just as much
manufacturing to achieve the price point you claim as it would
for Daniel's claim.

 

Ya know, this -had- to happen!!

 

Right on cue, here we go with Scamsoil again...

 

They have.

 

FWIW, that is the message I get from my gear-head younger brother. He tells
me it leaves crusty carbon that just won't dissolve with anything throughout
engines.

Mike

 

My $.02 worth... I have never used Amsoil but it is a mainstream product.
Not magic, I'm sure, but at least some independent references give their
products high ratings. (See, for example,
http://www.autoeducation.com/autoshop101/oil-change-7.htm for a comparison
of oil filters.) My trusted guys at the local NAPA recommend AMSOIL oil, but
I've been using Mobil 1 currently.

Other than the proselytizing, what is your complaint with AMSOIL?

Mike

 

I have changed a few of my cars from regularly changed dino to synthetic or
(in the case of my 220K mile turbo Volvo) to synthetic blend. I do one
change with a single quart of synthetic added to the rest of the usual
Valvoline 5W-30, and change to synthetic 1000 miles later. The oil always
comes out opaque black after 1K miles... but maybe the higher detergency is
a myth. If you are wondering whether the changes were regular enough,
consider that the original turbo has been on the Volvo for 20 years, while
most of the Volvo gurus say 100 - 150K is the life expectancy.

Mike

 

Naw, it isn't.

We know nothing about how "independent" this source is.

....and will be happy to sell it to you, I'm sure.

Fuhgeddaboudit. Go hit googlegroups.

DS

 

Latest inductee into the "bad oil of the year" club, eh? We've heard the
same ghost stories about Pennzoil, Quaker State, and probably every other
major brand at one time or another...

 

Here's some of the text of the "high rating" Scamsoil filters are given by
your "independent reference":

" The AMSOIL company recommends changing their filters at 12,500 mile or 6
month increments. Based on their numbers, this seems reasonable. They have
better capacity and stronger construction which should allow them to
achieve longer change intervals. Since AMSOIL filters have been
recommended for these intervals for about 20 years, it seems reasonable
that they know what they're talking about."