sae 30 or 40

[//no.comment]

hey, im going to machine mart tomorrow, gonna get some other things and some oil for the shock absorbers, how much will i need and what would be better for everyday road driving, sae 30 or sae40?
unfortunately they only do sae30 in 5ltr bottles for £20
whereas they have sae 40 in 1 ltr bottles for £5
would sae40 make the ride to harsh?
anyone in the manchester area wanna go halves on a 5 litre!!!!!

[PSL184]

Tescos do SAE 30 in 1 litre bottles for lawnmowers....

[bmcecosse]

£5 for 1 litre of SAE40 is a LOT to pay. Try a motorcycle place. You will only need ~ 0.5 litre - and that's allowing for several 'flushes' with the new oil - to chase out the old. SAE 40 will be ideal for the road.

[//no.comment]

hey, ive got the oil, and emptyed the dampers, tryed putting new oil in, but no amount of bouncing seems to be getting it to flush through, am i doing something really stupid,
ive removed the plug at the bottom, and the plate at the top.
Thanks,
Andrew

[PSL184]

Did the valve come out with the bottom plug...?

[bmcecosse]

Ooooh - you should only take the filling plug out at the top - put the 'plate' back on! Is there any oil in them - to drain out ??

[//no.comment]

but the filler plug is tiny! why shouldnt i take the top plate off? evrything is clean and i made sure i didnt get any crud into the damper.

front dampers btw,

Is there any oil in them - to drain out ??

id say about 3 table spoons of manky oil came out.

Did the valve come out with the bottom plug...?

not sure exactly what the valve comprises of but the lower plug has a long spindle with a spring on the end

[bmcecosse]

That's the valve - and 3 tablespoons is probably all there was anyway. Now add new oil and flush that through a few times - before finally refitting the valve assembly - and top it up. Leave a small air space - and check it again weekly for the next couple of weeks.

[PSL184]

Yes thats it - They don't need much oil in them at all....

[//no.comment]

well i thought that, but theres no flushing happening, no matter how much bouncing,

I think i may take it for a drive down the speed bumps on a road see what happens then!

[bmcecosse]

You may need to put valve (and plate!) back on - then bounce - then drain out the old.........