I never said you stated it. I said if you did state that's the interval you
use, I don't care. But when you post that others should in an open forum,
there will be active debate on it.
Which cap companies are currently suggesting a 3750/5000 interval? I know
that it isn't the case on the '01 Accord, '02 Venture, '03 SRX and '06
Passat. Nor is it suggested on the '06 which is what started this thread.
So which manufacturers are? The only ones that are suggesting it are the
oil change places and we know what their motivation is.
The 500mi vs. 7,500mi OCI was an extreme example to illustrate how oil
affects engine life. But to whoever said there's no data relating oil
change intervals to engine longevity, you're wrong. There is a DIRECT
relationship, though not stated through specific mileage numbers. There
was a contest in California decades ago about which organization could
put the most mileage on a car within one year. Not sure about the
specifics, but a Civic won with 1,000,000 miles. They changed the oil
every 1,000mi as one of the factors in ensuring a long life. I'm sure a
quick search will yield an article.
I can't stress this enough, go to http://www.bobistheoilguy.com !
"You could go ahead and change your oil at 1500 and I won't care. When
you recommend others do the same despite changes in modern engineering
(i.e. engines are better, oil is better and we have better ways of
predicting it's condition), someone will challenge that advice."
Grumpy AuContraire wrote:
Yes, I agree.
Agreed, though I feel the extra filter change isn't neccessary. This
entire discussion was sparked when Seth disagreed that 7,500mi OCIs
were too lengthy. He argued that the Oil Life Meter is entirely
accurate, so if it suggests 7,500, then the oil life meter is correct.
I suggested 5,000mi changes regardless of the OLM, and he argued that
the oil is capable of providing adequate protection until the meter
says it can't.
I use Specialty Formulations' MTL-P synthetic transmission fluid in my
6spd Civic Si. Aside from the peace of mind, I have noticed a true
improvement in shift quality; the infamous notchiness in 3rd gear is
gone! And no, this is not my imagination, many people have noted shift
feel improvement after switching to ANY synthetic tranny fluid in the
'06 Si. The MTL-P is very similar to Honda MTF viscosity (11.5cSt), but
the synth stock/additive package is way superior. A VOA shows Honda MTF
to be similar to engine oil, with an increased calcium content... But
I'm curious to see what Acura's newly reformulated tranny fluid is all
And again, I must disagree; synthetic engine oil does provide great
advantages over dino oil. It may not be worth the extra money for, say,
a family-carrying Camry, but for high-rev, high performance
applications, there is a significant improvement. Synthetic oil not
only coats better and retains viscosity at extreme temps, but its
cleaning abilities are well documented. The synthetic advantage may be
greater for tranny fluid, seeing as how much more stress is exerted on
transmission components, but synth motor oil is worth every penny.
Of course, this is all my opinion.
I claim bullshit.
A year is 8,760 hours. A million miles in 8,760 hours calculates
to....drum roll, please....114+ miles per hour.
That's straight running, with no stopping for fuel or driver changes.
Let's say fuel and driver changes are simultaneous, at 5 minutes every,
oh, 400 miles. That's 2500 stops right there. 2500 times 5 is 12,500
minutes, or 208 hours. Now instead of 8760 driving hours, you have only
8552 driving hours.
Oil changes every 1K miles? Let's say an oil change takes 5 minutes
(I'm being generous here). Let's further say that it happens, on
average, during a fuel/driver change. So let's not even calculate the
extra oil change time; let's leave straight available drive time at 8552
1,000,000 miles over 8552 hours is 117 miles per hour.
So this Civic drove between 114 and 117 mph for a year straight?
Well, then, why don't you do that. I'm sure the article would tell us
how a Civic went 115mph straight for a year, with no hiccups in any of
the fuel/driver/oil change periods, all of them running at an optimal 5
Or maybe my quick calculations are all you need to back down on this
<snip random stuff about synthetic oils)
Your calculator has an opinion? Gee, mine just does calculations.
Maybe my calculator is operating in some number base that yours doesn't?
Was that 1,000,000 miles in base 2?
Haha. That's a lot of calculations you went through. I guess I'm wrong
about the one year time limit; like I said, I don't remember specifics.
Do the Google search and find the contest website, I'm too lazy.
On 17 Sep 2006 16:23:39 -0700, televascular wrote:
Now THIS I find interesting...
I, too, have noticed this phenomena in 3rd. It has, on occasion, caused a
slight grind, as I didn't get the car fully into third before letting out
the clutch, as the notchiness (good word for it) interrupted my rythem.
What are the downsides (if any) to changing to a Synthetic Tranny fluid?
The manual is pretty clear on sticking with Honda's Tranny fluid. Would
this affect warranty?
Also, should it be done in a shop, or is it sufficient to just drain the
fluid and add the Synth? I've never changed Tranny fluid before in any
car. Always had it done by a shop. But it usually costs $80 or more. If
it is relatively easy, I'll do it myself...
Joseph M. LaVigne
There is no perceived downside to synthetic transmission fluid, besides
cost. I should warn you, however, that tranny fluid requires a very
specific viscosity and additive package, and different trannies require
different fluids. Honda uses the same MTF for nearly every vehicle they
sell, so just find one that is compatible. I did a lot of research to
find one that would be appropriate for the '06 Si, and I decided on the
SF-MTL-P ($30.20 + shipping for one gallon).
http://theoildrop.server101.com is a great resource.
Another note: after reading around on the internet, there have been
some instances where people claimed to switch to Redline MTL in their
Hondas, and then their synchros failed within 10,000 miles. Who knows
if the two are related, but it's enough to deter me from buying their
A transmission fluid change is even easier than an oil change, since
our Sis have no serviceable tranny oil filter. There are two plugs on
the side of the transaxle: the top one is for filling, the bottom one
is for draining. After draining, you fill the case with fluid until it
starts overflowing through the top fill hole; that's how you know it's
full. The service manual specs 1.6 quarts. You will need new washers
for both plugs, and a funnel (preferably with a tube) for adding fluid.
WARNING: on my old '98 Accord, I had a problem once where I drained the
tranny fluid via the bottom plug, but the FILLER BOLT HAD SEIZED. I
couldn't get it off for a while and it caused me a lot of stress. Make
sure the filler bolt comes off easily BEFORE you begin draining!
I just re-read your post: changing to non-Honda fluid will not affect
warranty. The Magnuson-Moss Warranty Act states that a provider cannot
void the warranty just because an aftermarket part is installed, unless
it is proven without doubt that the aftermarket part directly caused
failure or malfunction due to incompatibility or incorrect
installation. It is up to the warranty provider to prove the part
caused failure; you do NOT have to defend yourself.
But rest assured; pretty much any synthetic tranny fluid is better than
Honda MTF. Even my dealership's mechanic confirmed that.
Do you have any factual evidence for this assertion, or is it simply
your guess? You are saying that Honda's engineering team pushed the oil
life envelope aggressively in order to reduce perceived cost of
You should also note that the reason Hondas do well in cost-of-ownership
calculations is due first and foremost to relatively low depreciation
costs thanks to high resale values. In fact, it would be counter
productive for Honda to make recommendations which shorted the useful
life of it's products and therefore speed up the depreciation curve.
People readily confuse assertions with fact.
Sorry to tell you I used to pay $7.5 CDN for 1l of Honda's 5W20. I now
pay 6.75 for 1l of Amsoil 5W20. Honda oil is the cheapest
semi-synthetic blend from Petrocanada on the market. I believe the only
worse blend is Yamalube, which is $10 per 1l. Although Amsoil 5W20 is
not a pure synthetic just like Mobil 1 is not (unless it a 15,000
extended range oil), I would bet my last dollar that Amsoil 5W20 is
superior to "Honda's" 5W20. I have a 2003 Accord with 223,000KM. I
drive on Amsoil 0W30 and have been since 40,000KM. I replace the oil
every 40,000KMs. For me that's every 3 months. If I had to change it
every 8000KM, that would mean that I'd have to go under the car more
frequently than every 2 weeks. I guess suckers are born every day, and
the oil industry loves them, so keep up the busy lifestyle of changing
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