Will switching from Synthetic to Dyno oil harm my engine?

Have not.

Rotella T, Delo-400, Mobil Delvac ... those are your MAINSTREAM diesel oils.
Just visit any truck stop to see for yourself. Rotella Synthetic 5w-40 is
very rare in truck stops as is Delvac 1300.

 

Yes, old is old. I was referring, but not clearly, to newer vehicles.
(except Toyota V6's 8) )

 

Google will get me every rumor and troll and crackpot idea around. That was
the complaint you have with my Havoline report, although my brother is *way*
up on my automotive source list.

I respect your opinion more than those of random hits. Really!

Mike

 

Yep - and the numbers they were talking about were in the preceding text.
"For those of you who just want to know what's best, here's a breakdown of
the top 3, in my opinion. Mobil 1, Pure 1 and AMSOIL provide the greatest
filtration efficiency in the tests I've seen. Mobil 1 and Pure 1 both
achieved 93% overall filtration efficiency on the SAE HS806 test. AMSOIL
scored a 94%."

If AMSOIL *does* test well, can't you accept that?

Mike

 

I appreciate that; I meant see *my* previous answers to your question, via
Googlegroups.

 

Sure, but we don't know that they do. The author says the Scamsoil filters
did well in "tests he's seen". Jolly good, fine and well. Scamsoil filters
have done poorly in tests *I'VE* seen.

AND,

Scamsoil changes their filters'
build specs as often as every other filter maker does; today's results may
not apply tomorrow and almost certainly won't apply this time next year.

AND,

Scamsoil's filter lineup includes a lot of different filters, too; I'm not
willing to generalize the performance of any manufacturer's entire filter
line by the performance of one item from that line.

AND,

Scamsoil makes enough dubious (and outright incorrect) assertions about
enough of their products that I view them as an untrustworthy company.

AND,

I will not stop calling them "Scamsoil" until their hordes of
pyramid-crazed, True-Believer salesdroids disappear.

 

Yeah, and I could just pee in the oil fill hole for free. Yer point?

While I don't deny that relatively inexpensive conventional oils are
adequate for most engines, I simply do not trust the $.49/quart
pisswater to have anything like a halfway decent additive package. When
I use a conventional oil, I use one that has a good reputation (Castrol,
Valvoline, etc.) and that I know will have the same additive package (or
will improve over time) every time I buy it, rather than some different
random lowest-bidder blend stuffed into the same generic bottle at each
buying cycle.

 

Michael Pardee wrote:

"

And in fact it DID test well in that LS-1 long-term test (I belive its
linked somewhere from bobistheoilguy.com). But, in the long haul it
didn't hold up quite as well as Mobil 1 (excessive viscosity increase,
and lost its TBN much faster despite starting at a HIGHER TBN number
than Mobil 1).

And since they are very tight-lipped about the formulation, you never
know when they might change the additive packages for the worse without
re-labelling (although being "name brand" doesn't guarantee against that
either- witness the Valvoline Max Life fiasco where they changed the
forumlation radically for the worse about a year after its introduction
with a very good package.)

And I HATE the direct sales BS.

 

I like this Daniel Stern guy. He has great information and he's a good
writer.

Dave

 

He didn't look too intelligent in "Home Alone" 1 and 2.

Bill

 

It could probably be argued either way. VW may well be the volume leader
in passenger diesels in the US (no, I don't have a single number to back
this up). They recommend synthetic oil for their TDI's. So, for
passenger car diesels, I would say synthetics have caught on.

 

Oh but it has. Not only are specific synthetic oils becoming the preferred
lubricant for diesel engines, the service intervals are generally longer
than for petrol engines. VW/Audi petrol engines can run up to 20,000 miles
between oil drains while their diesel engines can run up to 30,000 miles.
Similar intervals for GM/Opel/Vauxhall. Mercedes and BMW have the same
potential drain intervals of up to 15,000 miles but practical experience has
shown these vehicles to have average intervals of around 12000 miles for
petrol engines and 14,000 miles for diesel. The discrepancy between
'potential' and 'actual' is due to the flexible and monitored nature of all
these vehicles service intervals.
Mercedes is now specifying even better oils than before in their newest cars
and have similar service intervals to VW.

You should also note that modern direct injection diesel engines are much
cleaner than your old Nissan indirect injection engine. Also ultra low
sulphur fuel is much cleaner and produces less soot and acid which accounts
for some of the improvement in diesels, allowing them to overtake petrol
engines in their service schedules by quite some margin. It is remarkable
that in tandem with this improvement is a remarkable improvement in specific
power output, refinement and economy. All as a result of tightening exhaust
gas emission regulations that dictate new technology and innovation.

Huw

 

Tractor engines are now commonly up to 500 hour intervals, which is
equivalent of 15,000 miles in an average road vehicle, on dyno oil which
meets just API CH4 or MB228.3 long drain specifications. No doubt that
could be almost doubled if synthetic oil meeting MB228.5 were used.
Certainly +50% is pretty safe if the filter was changed half way.

Huw

 

Results of "practical" vs "potential"

http://www.justracing.com/bmw/viewtopic.php?t=12

 

I buy mine off the shelf when I use it.
Probably won't anymore, now that I've found an off-the-shelf source for
Mobil 1 in 0W-20, 0W-30 and 0W-40!

 

Let's call a spade a spade. Bollocks. There are now hundreds of thousands of
cars that have run these intervals for many years with no ill effect. The
car in the link above is either fictional or posted by a liar. The service
monitoring devices fitted to these cars even monitor oil condition and will
shorten intervals if warranted. I have never seen any adverse effect when
using the recommended oil.
If a defect occurs in the system anywhere then it defaults to a safe mode
where an early service is flagged.

Anyone is free to change their oil at any interval they choose but
misinformation using misleading shit of such extreme sludge that could not
occur in these engines at recommended intervals is just plain crazy. That
engine is full of shit which just does not happen if BMW recommendations are
followed. In fact I would expect minimal deposition at any mileage if normal
services and oils are used as specified by BMW who, after all, are fairly
conservative compared to others. GM cars built in Europe have long had
20,000 mile/two year fixed intervals before gradually fitting flexible
monitored systems.

A friend changed an Audi with nearly 200,000 miles on the clock which had
services which were never closer than 20,000 miles and it ran like new.
Don't try these kind of intervals with your American engines which have 5000
mile recommended intervals while using minimal SL oil though, or you will
indeed find a bit of sludge.

Huw

 

Exactly what I've seen.

 

What it's supposed to do, is it has 'conditioners' in it to keep the
seals, etc from getting brittle and rotting away. Does it work? They say
it does!

 

SNIP

I know some people don't like the fact that AMSOIL sell through a Network
Marketing system.
Whatever.

JP

 

SNIP

If it were pyramid, it would be illegal. Pyramid should not be confused with
network marketing, which is perfectly legal..