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Free oil link
Well, I am not sure if you read my note, but as far as my experience goes, I
have no old wife, and iff'n I did, she wouldn't have a clue about different
oils... :-)
I will respond to you comments as if you have read my note, and post a reply,
point by point after the pertinent comments you have made...
Quoting L F <rocco16v@netzero.net>:
> 2) I have heard lots of old wives tales about synthetics/conventional/seals
> and don't believe a word of it. My experience has been that switching back
> and forth will NOT create new leaks.
This is, as my previous note states, is not true. However, you are not
completely wrong... Synthetic oil does not specifically create new leaks,
exactly. The molecules of synthetic oil are smaller, and they are therefore
more likely to find their way past the seals because of this. It is not that
they actually cause wear on the seals, this is not the case... I put 5-40
Castrol synthetic in my 83 GTi, with over 180K on it... It blew so much oil
everywhere that the engine bay went from silver to black... I had to install
new seals, and once I did, I did not have any problems... I also did this on
another GTi years ago, and had the same trouble... Fewer miles, still over
100K, same results...
> 3)I use a 20/80 synthetic/conventional mix in the Scirocco. Have for four
> years and have had no problems.
The length of time that you use it has no effect on leaks. If you put it in
and have no trouble, you will not have any more trouble more so than mileage
might cause alone...
It's better (from what I've read) than
> straight conven, but not as good in a crisis as full synthetic. Face it;
> synthetic is only an advantage if/when you have a near melt-down situation
> and your oil temp goes WAY up.
This is also not true. Synthetic also does not take on the heat like dyno oil
does. Aircooled engines in most applications will not work well with
synthetic because of this (so sayeth the prophet Gene Berg, before his
untimely death).
Otherwise, a quality conventional oil does
> just fine. And don't be swayed by high-mileage claims for the synthetics;
> it's not the OIL that wears out, it's the additives.
>
Well, not to be an ass again, but not true. The additives, once added, become
part of the oil. Now while some parts of the additive package might loose
their effectiveness, because of the fact that it is in synthetic (better heat
isolative properties), the additives do last longer... I have used synthetic
for 10-15K mile intervals in Audi 5K turbos, with NO INCREASE IN WEAR... How
many turbos, you ask? Either four or five, I cannot recall...
Hopefully that helps,
David
> Larry
> ----- Original Message -----
> From: Dan Smith
> To: list
> Sent: Wednesday, October 22, 2003 11:30 AM
> Subject: Re: Free oil link
>
>
> Cool! Along these lines, I've heard the max life type oils are pretty much
> the only thing you can use once you put them in. I think it was because
> whatever softens and expands the seals needs to constantly be there and if
> you swap to a normal oil, the seals shrink way up. Anyone know if this is
> true? I use Castrol GTX High Milage, but would like to switch to a synthetic
> (Rotella T). I know I'll get some seepage just from using the synth stuff,
> but I don't want lots of leaks springing up. Could I use half and half or
> would that defeat the purpose of both oils?
>
> Dan
>
> Kervin Ridgley <kridgley@brownscar.com> wrote:
> http://www.valvoline.com/pages/rebates/rebate_details.asp?rebateid=9
>
> I saw this in the MK1 vortex section
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