Will switching from Synthetic to Dyno oil harm my engine?

SNIP
>
> I use Castrol or Valvoline dino in my cars, change oil and filter (
> Motorcraft Fl400-S) every 90 days or 3,000 miles, and have never had
> an engine problem related to oil. n e v e r.
>
> Go figure. If you want to spend the extra $ on synthetic, it's your
> money, be my guest.
>
> Lg

Dino oil is, indeed, good. Nobody will deny it. But what other folks here
are trying to say is that a good quality synthetic oil is soooooo
muuuuuuuuch better.
;-)
JP

Hello every one I ran upon this group the other day. I live in Nebraska
where it is pretty cold at times. I have a "95 Sentra with 144k on it,5
speed. I just recently swithced to Vavoline Max Life 5-30. It is supposed to
be designed for cars over 75k, so far so good but is it worht the little
extra you pay? Any thoughts on this would be appreciated. Bill in Norfolk
"elmo" > wrote in message
o.verio.net...
>I have a 99 Altima with 66,000 miles on it now. I've been using Mobil 1
>since 40,000 miles and to be frank I dont see the cost benifits to use
>mobil 1 on a "economical" car. Is it safe to switch back to dyno oil or
>will it harm my engine?
>
> thanks
>
>

"Lawrence Glickman" > wrote in message
news
> I use Castrol or Valvoline dino in my cars, change oil and filter (
> Motorcraft Fl400-S) every 90 days or 3,000 miles, and have never had
> an engine problem related to oil. n e v e r.
>
> Go figure. If you want to spend the extra $ on synthetic, it's your
> money, be my guest.
>
> Lg
>

This topic never fails to generate long threads, and I don't think many
people will change their minds. I'm no expert - I just pay my money and take
my choice. But these guys think synthetic is better than dino in nearly
every way - especially in cold weather:
http://www.autoeducation.com/autosho...l-change-1.htm and succeeding
pages. Their take on oil change intervals is on page 9
http://www.autoeducation.com/autosho...l-change-9.htm

Mike

"Bill duncan" > wrote in message
...
> Hello every one I ran upon this group the other day. I live in Nebraska
> where it is pretty cold at times. I have a "95 Sentra with 144k on it,5
> speed. I just recently swithced to Vavoline Max Life 5-30. It is supposed
> to be designed for cars over 75k, so far so good but is it worht the
> little extra you pay? Any thoughts on this would be appreciated. Bill in
> Norfolk
>
I tried MaxLife once but didn't see any changes one way or the other. I like
Valvoline, so I may have used it a second time but after that the expense
just seemed too much. As the saying goes, "can't hurt, might help." Except
the price, of course.

Mike

> I use Castrol or Valvoline dino in my cars, change oil and filter (
> Motorcraft Fl400-S) every 90 days or 3,000 miles, and have never had
> an engine problem related to oil. n e v e r. Go figure.

I wave my left arm in a semicircle eight times every hour on the hour
between 8AM and 8PM weekdays (10AM and 12AM weekends) and have never been
attacked by a pink crocodile. n e v e r. Go figure.

Correlation does not imply causation.

> If you want to spend the extra $ on synthetic, it's your money, be my
> guest.

Well, let's do the math, shall we?

Castrol or Valvoline's at about $2.10/qt including tax.
Mobil-1's at about $5.10/qt including tax.
An FL400S filter is about $4.20 including tax.

Let's say your car takes 5 quarts and you want to drive it for 60,000
miles.

If you're changing dino oil every 3k miles, that's 20 filters and 100
quarts, so $210 worth of oil and $84 worth of filters. Total oil costs in
60k miles, assuming the engine consumes none: $294.

If you're changing Mobil-1 every 9k miles, that's 6 filters and 30 quarts,
so $153 worth of oil and $25.20 worth of filters. Total oil costs in 60k
miles, assuming the engine consumes none: $178.20.

"Extra money" spent on synthetic: one hundred fifteen undollars and eighty
uncents.

-DS

"Daniel J. Stern" > wrote in message
.umich.edu...
>
> If you're changing dino oil every 3k miles, that's 20 filters and 100
> quarts, so $210 worth of oil and $84 worth of filters. Total oil costs in
> 60k miles, assuming the engine consumes none: $294.
>
> If you're changing Mobil-1 every 9k miles, that's 6 filters and 30 quarts,
> so $153 worth of oil and $25.20 worth of filters. Total oil costs in 60k
> miles, assuming the engine consumes none: $178.20.
>
> "Extra money" spent on synthetic: one hundred fifteen undollars and eighty
> uncents.
>
> -DS

Dan, if I read your post correctly (and I didn't check the math), isn't the
Mobil-1 regimen *cheaper* when compared to the dino regimen?

"James C. Reeves" > wrote in message
...
>
> "Daniel J. Stern" > wrote in message
> .umich.edu...
>>
>> If you're changing dino oil every 3k miles, that's 20 filters and 100
>> quarts, so $210 worth of oil and $84 worth of filters. Total oil costs in
>> 60k miles, assuming the engine consumes none: $294.
>>
>> If you're changing Mobil-1 every 9k miles, that's 6 filters and 30
>> quarts,
>> so $153 worth of oil and $25.20 worth of filters. Total oil costs in 60k
>> miles, assuming the engine consumes none: $178.20.
>>
>> "Extra money" spent on synthetic: one hundred fifteen undollars and
>> eighty
>> uncents.
>>
>> -DS
>
> Dan, if I read your post correctly (and I didn't check the math), isn't
> the Mobil-1 regimen *cheaper* when compared to the dino regimen?

Shall we read it slowly?

one hundred fifteen undollars....

"Steve Bigelow" > wrote in message
...
>
> "James C. Reeves" > wrote in message
> ...
>>
>> "Daniel J. Stern" > wrote in message
>> .umich.edu...
>>>
>>> If you're changing dino oil every 3k miles, that's 20 filters and 100
>>> quarts, so $210 worth of oil and $84 worth of filters. Total oil costs
>>> in
>>> 60k miles, assuming the engine consumes none: $294.
>>>
>>> If you're changing Mobil-1 every 9k miles, that's 6 filters and 30
>>> quarts,
>>> so $153 worth of oil and $25.20 worth of filters. Total oil costs in 60k
>>> miles, assuming the engine consumes none: $178.20.
>>>
>>> "Extra money" spent on synthetic: one hundred fifteen undollars and
>>> eighty
>>> uncents.
>>>
>>> -DS
>>
>> Dan, if I read your post correctly (and I didn't check the math), isn't
>> the Mobil-1 regimen *cheaper* when compared to the dino regimen?
>
> Shall we read it slowly?
>
> one hundred fifteen undollars....
Yes...$115 more for the Dino regimen OR $115 less for the Mobil-1 regimen.
I already got that.

On Mon, 20 Dec 2004, James C. Reeves wrote:

> > If you're changing dino oil every 3k miles, that's 20 filters and 100
> > quarts, so $210 worth of oil and $84 worth of filters. Total oil costs
> > in 60k miles, assuming the engine consumes none: $294.
> >
> > If you're changing Mobil-1 every 9k miles, that's 6 filters and 30
> > quarts, so $153 worth of oil and $25.20 worth of filters. Total oil
> > costs in 60k miles, assuming the engine consumes none: $178.20.
> >
> > "Extra money" spent on synthetic: one hundred fifteen undollars and
> > eighty uncents.

> Dan, if I read your post correctly (and I didn't check the math), isn't
> the Mobil-1 regimen *cheaper* when compared to the dino regimen?

Hence "undollars" and "uncents".

On Sun, 19 Dec 2004 21:24:21 -0800, elmo wrote:

> I have a 99 Altima with 66,000 miles on it now. I've been using Mobil 1
> since 40,000 miles and to be frank I dont see the cost benifits to use mobil
> 1 on a "economical" car. Is it safe to switch back to dyno oil or will it
> harm my engine?
>
> thanks

Yeah, it's safe.

Running an engine without oil=unsafe.