Viscous fan oil replacement

[KERRSURF]

Pretty sure it was 10,000 we put in mine.

[Ploddit]

Pretty sure it was 10,000 we put in mine.

I started of with putting about 20ml of 7000 in mine, but after reading the above thread I removed it and made it up to 50ml.

It seems to be on too much but when the motor is hot (and just switched off) it hasn't been what I'd call stiff.

I've only done idling plus a warmed up 2 mile trip - even though it's touching 30° down here today.

I'll keep an eye on it and report.

[si tate]

Is this the same procedure for a 3rd gen?

Might have a look at mine this weekend.

[Hazzo]

It will be, but be sure to have an impact driver or you'll chew the screw heads up. H

[si tate]

It will be, but be sure to have an impact driver or you'll chew the screw heads up. H

Not got an impact driver so I'll leave it for now.

Checked it & it seems quite stiff, well stiff-ish.

[KERRSURF]

Not got an impact driver so I'll leave it for now.

Checked it & it seems quite stiff, well stiff-ish.

Means nothing Si, the fan only works as it should once the temps are up.
£8, cheap enough and does the job.

http://www.powertoolwarehouse.co.uk/...river-set.html

[si tate]

Means nothing Si, the fan only works as it should once the temps are up.
£8, cheap enough and does the job.

http://www.powertoolwarehouse.co.uk/...river-set.html

My mate has one in his garage so he may be getting an unexpected visitor over the weekend.

[bobby4star]

Well my surf was getting warm when towing the caravan up hills, done everything else, new rad, water pump, all pipes, thermostat, checked elec fan, fitted transmission oil cooler behind lower front valance etc.... but still getting too hot towing uphill.

I've changed the oil on my viscous fan this morning and what a difference. If you have any overheating problems on your surf, or if you are going to tow with it, this cheap and easy viscous fan service is essential.

I bought some 6000 silicone oil on ebay, cost £4, its shock oil for radio control cars! The oil left in my fan, was a golden colour, and looked a bit thicker than the new stuff. There wasn't much of it, so I left it in and just put in about 40ml of the new stuff, until I'd filled up the clutch side, then all back together. It is noticably stiffer when cold (it was free wheeling before). And when you rev the engine now, even when cold, it is blowing a gale under the bonnet. I could not believe the difference. When you rev the engine now, the amount of air being pulled through the rad spins up the elec fan in front of the radiator too. In fact, at idle, it's enough to turn the elec fan at low speed. And you get that nice roar at 2000 revvs. Having the fan on a bit too much will probably affect the fuel economy a bit, but hey, if it keeps the head cool its got to be worth it.

Give it a go, I'd say this is essential for any surf in the uk, especially if you are towing. And I'd say 6000 grade oil is probably a bit too high, try 4000 or 3000 like toyota spec.

Cheers

[Wolfracer]

What viscosity is recommended then? there's talk of 3k to 10k. Ebay RC cars seem to use 'em all.
So which one do I get, bear in mind when I tow, it's generally really heavy...

[Albannach]

Use the 10k stuff.

[Wolfracer]

Use the 10k stuff.

£6. on it's way!
Ta.

[Albannach]

Share the seller's name for the benefit of those who bother to search.

[Wolfracer]

Share the seller's name for the benefit of those who bother to search.

Sure:

http://www.ebay.co.uk/itm/3304620532...84.m1497.l2649

Seller NTWARDS

Twas actually £5.70 for 45ml delivered. Having took the fan off the other day, and owning an impact driver, I hope to do this mod in about 10 mins....

[Albannach]

20 minutes - 12 hours. it's best to flush the old fluid out with petrol.

I stripped and cleaned mine, left it overnight (for the petrol to flash off) then rebuilt and refitted the next day.

[Wolfracer]

20 minutes - 12 hours. it's best to flush the old fluid out with petrol.

I stripped and cleaned mine, left it overnight (for the petrol to flash off) then rebuilt and refitted the next day.

Damn! I knew it seemed too straight forward! So, it's demount, take apart, pour out old oil, bathe in petrol,(overnight?) then re fit? Looks like another weekend job then!
Thx for info.