Re: Something to be said for changing the oil every 3000 miles
- From: nm5k@xxxxxx
- Date: Wed, 9 Feb 2011 23:04:06 -0800 (PST)
On Wednesday, February 9, 2011 9:44:05 PM UTC-6, uncle_vito wrote:
Synthetic oil changed at 7500 miles is actually half as long as recommended
by the factory.
What factory? Not for a 2005 Toyota.. The highest factory advised
interval that I can recall was 7500 miles. And it ended up biting
them in the rear big time, even if they won't admit it.
So they went back to 5000 miles. I know of no Toyota that had
15,000 mile oil change intervals recommended by the factory.
No matter what kind of oil. As far as oil sked, they don't care
what oil you use. Dino, or synth.. They don't care. You still
have to follow the same schedule. Myself, I use a synth blend.
Maybe Amsoil.... :/ But I don't use that overpriced stuff.
With unleaded gas, and other high tech smog influenced
designs, there are lots less acids and crap to get in the oil. Better
piston tolerances mean tighter seals so less fuel into the oil. Faster warm
ups mean less condensation and good oil warm up even on short trips, Fuel
injection prevents flooding and gas in the oil problems, Thinner oil means
gelling only in extreme abuse, better additive packages due to better
chemistry.
Waiting too long to change the oil is extreme abuse as far as I'm
concerned. A lot of the Toyota's with gelling problems were in recent
years when all you mention applied. A lot of the problem was due to
head oil port size issues, which was corrected on later years.
It was the combination of head issues and the "then" long 7500 mile
oil change schedule which led to the problems. That's one reason why
they went back to 5000 mile intervals. They got tired of customers
having cars towed in with fried engines. And many of these people
followed the book and did 7500 mile changes. They still had gelling.
But with the head re-design, and going back to 5000 mile oil changes,
you don't hear much chatter about gelling these days.
And it wasn't just Toyota's that had the problem. Some Fords saw it
too, and probably others. It was the hot running engines due to emission
requirements that really started it all. And most started coking up
in the hot head oil passages first.
I think the paint job on your car would go bad before your engine does with
just factory change intervals.
And that's why I follow the factory change intervals of 5000 miles.
In otherwords, you would want to get rid of your car for other reasons way
before your engine would cause you to get rid of it.
Maybe. But being as I plan to drive it until it rots away, I'll
follow the factory schedule of 5000 miles.
.
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- Re: Something to be said for changing the oil every 3000 miles
- From: uncle_vito
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