oil change question

[kitchenman]

Hi guys, I just got a 94 Maverick from a local dealer [Westcliff Essex], he sorted out a major problem, poor power output lack of revs, not apparent when I bought it, snow on the roads. Workshop 10 was the answer.

Now I want to change all the oils but have been warned by another 4x4 owner to prime the turbo before starting the engine after the oil change.

I do not understand the warning as this is the first vehicle I have had with a turbo

Is he getting me worried for nothing? or is there a know how trick?

[tezzer]

never heard of priming turbo myself, i just change oil, when you change rear diff oil, make sure you can undo filler plug first, they can be very tight, and use lsd diff oil, check the down loads for information,

welcome to the club, im not to far from you, laindon,

[solarman216]

priming the turbo simply means let the motor idle till the oil pressure gets up before you give it some revs, at idle the turbo is not doing a lot but when you give it some revs it starts working just like you should let it idle for a minute or so before shutting down, but this is standard turbo practice, Rick

[R1cho]

Originally Posted by solarman216

priming the turbo simply means let the motor idle till the oil pressure gets up before you give it some revs, at idle the turbo is not doing a lot but when you give it some revs it starts working just like you should let it idle for a minute or so before shutting down, but this is standard turbo practice, Rick

see thats why i like this owners club, i knew u had to let the engine idle for a while before turning off, but i never knew why, now i do

[rustic]

Originally Posted by R1cho

see thats why i like this owners club, i knew u had to let the engine idle for a while before turning off, but i never knew why, now i do

2 reasons for this:1

1 reving the engine will leave the turbo spinning after you have turned the engine off, may starve it of oil.

2 If the engine is really hot when you turn off the engine the oil in the bearings could cook.

[lacroupade]

TBH I think wait time before switch off is not necessary on these trucks.

I drive at the limit most of the time and all four of my T2s have been thrashed soundly and never had a turbo problem in 100s of 000s of miles....but thats just me (as Ssteve is wont to say LOL)....

[rustic]

Originally Posted by tezzer

when you change rear diff oil, make sure you can undo filler plug first, they can be very tight, and use lsd diff oil, check the down loads for information,

Just a thought for anyone who has made the error of draining the diff oil, before removing the filler plug which may have seized.

On outboard engines, on the gearbox we fill from the bottom plug and wait for it to flow out of the plug at the top. Put the top plug in then replace the lower plug, very little oil loss.


So consider this: make up a diff sump plug ???? with a clear pipe attached, could be a cork even.

Fill the diff from the bottom with warm LSD oil, using a funnel in the pipe, observe when the final level is at the bottom of the top plug, approx 2.9 litres, by checking the level in the pipe against the diff.
At this point you could block off the axle vent to stop air getting in to slow the flow,
Remove the plug/cork and insert the sump plug, prepare for leakage, but at least it can be done and you can be sure you have the right amount in.

It will take a while as the top vent on the diff has to vent the displaced air.

This method could be used for gearboxes, transfer boxes as well as diffs.

Not tried it on a car but it should work fine.