Actually, the true reason for the warning on older engines is because of a
possibility of sludge buildup. Some of this buildup causes a false seal in
these older engines that synthetic oil may dissolve. That is where the
leaks come from. If you have a car that doesn't run for six months at a
time then no sludge is forming but if you don't change the oil you may end
up with other problems. I never said you couldn't go back to dino oil on
any car, though on a newer one, I don't know why you'd want to. Perhaps
it's a money thing. Synthetic oils, though a lot more expensive, are better
lubricants, especially in temperature extremes. Even blended oils are
better than plain dino oil. If you're a "normal" street driver, live in a
moderate climate area and change your oil every 3K miles, then dino oil will
probably work for you for the life of your vehicle.
Not jumping on you. I have seen where synthetics in older engines have had
problems. Those folks changed back to dino oil successfully.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of John Neff
Sent: Sunday, October 06, 2002 9:22 PM
To: Dakota Mailing List
Subject: DML: RE: Re: Mobil One Syn 5-30
Let's try this again with the subject line.
Uhh, no older engines were never a part of the question. The original poster
has a new
truck with less than 20K miles on it and got a synthetic fill by accident.
BTW, I switched an 88 Pontiac 305 over to synthetic about 4 years ago. That
made every
seal in the engine 10 years old at the time. They had aprox. 60K miles on
them. The car
sits in the garage for up to 6 months at a time. That's extremely difficult
on seals. It
doesn't leak oil. And, if I wanted to, I could go back to dino juice at any
time without a
single worry.
Show me anywhere that it says you cannot go back to dino juice after
switching to
synthetic on any engine with any amount of miles. You can't do it.
John
>We are talking about older motors that have wear and tear.
>Try it and see what happens. Been there and done that...I should know.
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