Gearbox service and oil cooler flush

Hi guys,

The never ending list on my 2003 4.4 ranges seems to be ever expanding...

So far I've replaced the cam position sensors, thermostat, pcv valves and spark plugs, a combination of prevention and reaction to fault codes.

Part of the issue is that I only have part service history so I'd rather be safe than sorry...although I am starting to realise the cost implications of not having all past invoices!!

Future jobs include the timing chain tensioners and in the near future, a gearbox service...

The cars had a recon box in the last few years... I can hear a very slight whirring on idle so my thoughts are to swap the fluid and filter out for which I'll use saints useful guide...

My question is re the oil cooler- don't really want the additional expense (£100+) of replacing it and the oil cooler thermostat.

Can the cooler be cleaned/flushed and if so how and with what?

Likewise can the thermostat be cleaned up or is this a recommended change item?

Cheers all.

I personally can not see a reason to replace the oil cooler. I would simply clean the water side with some mild acid and the oil side with thinners.

That being said, I am speaking out or my arse until I actually had an old one in front of me to compare the energy transfer to a new one after cleaning. I have only cleaned boiler heat exchangers which I believe to be similar.

The point is though that until some tests are carried out it is prudent to replace it as if it does go tits up the ramifications are great. Also the money saved by DIY means it is in a way free!?!?

I would however replace the thermostat without question - it is on my list when I do my next oil change.

I'm sure others will chime in!!!

Charlie

It is wise to either thoroughly clean it you are confident it isn't blocked and is working efficiently or replace it....

Doing nothing to it is fool-hardy!

charliedurrant said:

I personally can not see a reason to replace the oil cooler. I would simply clean the water side with some mild acid and the oil side with thinners.

That being said, I am speaking out or my arse until I actually had an old one in front of me to compare the energy transfer to a new one after cleaning. I have only cleaned boiler heat exchangers which I believe to be similar.

The point is though that until some tests are carried out it is prudent to replace it as if it does go tits up the ramifications are great. Also the money saved by DIY means it is in a way free!?!?

I would however replace the thermostat without question - it is on my list when I do my next oil change.


I'm sure others will chime in!!!

Charlie

Click to expand...

:5biagree:being as its your gearbox & not mine

wil2813 said:

:5biagree:being as its your gearbox & not mine

Click to expand...

I've bought one off ebay to see if my arse talking holds true!