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ATF Change for S40

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Posted 22 January 2005 - 10:36 PM



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If I do increase the BHP, I have to change the brakes lah, the suspension
lah, the spring lah, this lah that lah.... Must buy 4D first... Tongue


Posted 23 January 2005 - 01:15 AM


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Why don't you trust the manufacturer? Automotive engineering is advancing.
One way to reduce car owner operating cost is by prolonging fluid service

But again, no one can stop you if you bent on going against manufacturer's
recommendation. You are just not going to enjoy the fruit of their R&D.


Posted 27 January 2005 - 02:11 PM



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Just changed ATF yesterday. The costs = RM48!!

According to 850's manual (which I read it 2 minutes ago), change is not
required for the life of the car!!! Hard to believe!

Happy Thursday!!!


Posted 27 January 2005 - 05:50 PM


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I have also RX300, with similar manual as 850, ... "ATF change is not
required". 2 weeks ago the gear shifting was getting rough after my long
travel from centre to north the to south and back to centre with full
load on the car (mileage 55,000 km), yeah high speed travelling along
highway. It seems that the ATF was burnt.

3 days ago I decided not only to change the ATF but flush entirely the
ATF. After that the gear shift become smoother and smoother.

At the same time I flushed also my 940 ATF, now the gear shitfting is

What happen if we trust 100% to the manufacture recommendation, running
the car with uncomfortable gear shifting ??? scarry lar ?

BTW, did you change ATF on the tranny only or flush entirely the ATF ?
Volvo for Life


Posted 28 January 2005 - 07:14 PM



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even BMW recommend that their auto transmission fluid is "lifetime" ie no
need to change.

But what harm is there to change to fresh ATF and new filter? I changed
mine on my E36 and gear change is MUCH smoother.


Posted 28 January 2005 - 11:54 PM


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I dont know why car manufacturers still claim that ATF on new modes is
for life...apart from wanting to earn thousands in replacement
transmissions...for more info on fluids and transmissions see the link
below....oops...was that what you call a plug?Shy


Posted 29 January 2005 - 12:05 AM


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Manufacturers shall disclose the scenario, why No need to change the ATF.

This may be true if the car is operated close to the poles (north and
south), where the operating temperature of transmission maintained below
50 deg. C.

Fact is, Driving conditions such as quick stops and starts, ascending and
descending mountains, and wheel-spinning in slippery conditions, hot and
dirty ambient are but a few scenarios that can devastate the life of the
transmission fluid.

The overwhelming majority of transmission failures are heat-related, and
automatic transmission fluid breaks down rapidly when subjected to high

At 80 deg. C anticipated operating temperature inside transmission, the
life of ATF can reach 150,000 km life. At 100 deg. C the life of ATF will
drop to only 40,000 km. Above 100 deg. C, ATF start to burn reaching its
auto-ignition temperature (flash) at around 210 deg. C.

Beside engine temperature gauge, transmission temperature gauge is also
important to monitor its operating temperature, to anticipate the time
when we have to change or flush the ATF.

If intermittenly the transmission temperature reach to 110 deg c. (not in
the anticipated scenario of manufacturer), the life of ATF will drop to
20,000 km.

This happened to my rx300, when I accelerated (over taking) from 3rd and
rpm reached 5,000, I smell burning oil, ... may be the temperature was
already above 100 deg. C.


Posted 30 January 2005 - 10:49 PM



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Hi Vol940
Got an ATF change on my used S70 bought in Dec04 and the guy in NS2 said
that one should not flush ATF but change it regularly esp when mine had a
weird colour (pink??) He said it should be done like a blood change in
humans as a complete flush will harm the gear box. He asked me to change
once more in late Jan 05. Is he wacko or what?


Posted 31 January 2005 - 02:09 AM


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Most mechanics are NOT Automotive Engineers, are NOT Lubrication
Engineers, are NOT Tribologists, are NOT Chemists, are NOT Rheologists.
Neither is typical mechanic equipped with MICROSCOPE, VISCOMETER,

The wierd color (pink) doesn`t mean that the fluid is free from metal
wear particles (size in micron). Human blood is different thing, if the
blood is dirty, there is an organ that clean and filter the dirt from the
blood. It is not so for transmission and its fluid (though there is a
filter or magnet in the tranmission). The micro metal wear particles
suspend in the lubricant which could amplify the wearing process.

Why lubricants need to be changed periodically ... ?

1. The most important reason is chemical change of the lubricant itself.
The lubricant looses its lubricating capacity due to chemical
decomposition of the oil itself and due to depletion of the chemical
additives that are present in modern oils. The more severe are the
operating conditions, the faster does this change occur. ... It is not so
for the blood....

2. The second reason is removal of wear particles that are present in the
lubricant and which can not be removed by normal filtration. The greater
the loads to which the mechanism is subjected the faster is the wear and
more wear particles are present in the oil.

If only change the ATF without flush, you change only the fluid in the
pan (as if you only top-up), which is only 2 to 3.5 liters (depends on
the transmission type). For 940, only 2 liters, but 6 liters balance
still in the tranny. For RX300, 4 liters in the pan and 4 liters in the
tranny. I do not have idea in S70.

The only harm is against rubber seal. But most ATF that meet DEXRON-III
and MERCON specifications compatible with most rubber seal in todays cars
transmission. (Remember that VOLVO does not manufacture ATF).

Cheuman wrote :
The cost of volvo synthetic ATF is SG$160 per 4 litre. Close to RM400 for
4 litre.

If you flush your transmission, you need 8 liters (at least) and with the
labor will cost you around RM 1,000....at VOLVO ofcourse ... what do you
think ?.

As comparison :

Flush ATF Type-IV for RX300 - RM 140 (8 liters). Labor ? ...Free ...
I used TOP ONE ATF Type-III for my V940 - RM 91 (8 liters)...Labor ? ...

Both running smooth.




Posted 31 January 2005 - 10:28 PM



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Great stuff. Thanks