Yact: What happens if you don't change your transmission or coolant fluids?

[JEDI]

ok, if you dont change your transmission fluid, something bad will happen to your transmission.

and if you dont change your coolant, then the anti-rust stuff in there will get all used up. but my radiator is plastic...

And does either have any effect on gas milage? (My gas milage went from 38mpg highway to 33mpg.)

edit: automatic tranny

 

[Toastedlightly]

Coolant, if it starts to get deposits in the engine, will cause heating issues, or force the pump to work harder, leading to power loss. Tranny fluid should be changed every 50k miles (i believe) and could, but most likely not. How many miles she got?

 

[Kipper]

If you have a manual transmission change the fluid after the first 3-5K then never thereafter.

Coolant is usually good for 75,000-100,000 miles or every 3-5 years but every couple of years doesn't really hurt to change it.

and PLEASE recycle your antifreeze. DON'T dump it down your sink.

 

[Colt45]

i don't usually change coolant unless the rad breaks

what kind of tranny is it?

 

[Fingers]

For the tranny ver similer to if you never changed your oil. Coolant, boiling temp drops and freezing temp rises therefore you are more likely to blow a freeze plug, or crack the block. Plus changing the coolant cleans some of the gunk that sticks to the walls of the coolant chanels.

 

[0roo0roo]

plastic radiator

 

[TitanDiddly]

Originally posted by: 0roo0roo
plastic radiator

That's what I thought...

 

[NutBucket]

Originally posted by: PhasmatisNox

Originally posted by: 0roo0roo
plastic radiator

That's what I thought...

The end tanks (or top/bottom) are plastic. Hell, even MB uses 'em.

 

[Colt45]

Originally posted by: NutBucket

Originally posted by: PhasmatisNox

Originally posted by: 0roo0roo
plastic radiator

That's what I thought...

The end tanks (or top/bottom) are plastic. Hell, even MB uses 'em.

Yeah, it's pretty bloody common now.

 

[NutBucket]

Originally posted by: Colt45

Originally posted by: NutBucket

Originally posted by: PhasmatisNox

Originally posted by: 0roo0roo
plastic radiator

That's what I thought...

The end tanks (or top/bottom) are plastic. Hell, even MB uses 'em.

Yeah, it's pretty bloody common now.

Now? Some friends have an '88 Benz, one of the big ones. It has plastic radiator tanks.

 

[Colt45]

Originally posted by: NutBucket

Originally posted by: Colt45

Originally posted by: NutBucket

Originally posted by: PhasmatisNox

Originally posted by: 0roo0roo
plastic radiator

That's what I thought...

The end tanks (or top/bottom) are plastic. Hell, even MB uses 'em.

Yeah, it's pretty bloody common now.

Now? Some friends have an '88 Benz, one of the big ones. It has plastic radiator tanks.

now means last 20 years
my '84 and '88 audi has it too.

I guess they figured since all rads die, might as well make them cheaper.
Unfortunately a custom rad is cheaper than an audi replacement

 

[0roo0roo]

end tanks? u mean the overflow/refil tank? thats not the radiator.

 

[Colt45]

Originally posted by: 0roo0roo
end tanks? u need the overflow/refil tank? thats not the radiator.

no, the caps on the sides of the rad. represented by [ and ] in my asci drawing

[/\/\/\/\\/\/\/\\/\/\/\/\\/\/]
[/\/\/\\/\/\/\\/\/\/\/\/\/\\/]
[/\/\\/\/\/\\/\/\/\\/\/\\/\/\]

 

[JEDI]

automatic tranny.

now does either the coolant or the tranny have anything to do w/the 20% drop in gas milage (highway)?

yes, i know winter fuel has some stuff added that drops gas milage. but this 20% drop occurred within the last month. winter fuel went into effect in Oct, i think.

 

[0roo0roo]

air filter maybe. winter gas too...coolant doesnt affect mileage.. it affects whether ur engine lives or dies