Monday, 20 July 2009

Avanza: DIY Oil Change

Its 110k km..

1. Oil filter wrench.
2. size 14 wrench.
3. waste oil container.
4. Old news paper.
5. Tissue or toilet roll.

1. Oil filter.
2. Engine oil.

~ No need to jack up the car.
~ Size 14 wrench need to be reasonably long to make the open of drain bolt easier. Quite tight.
~ Warm up engine or take a short breakfast drive, let the engine cool down a little so the oil release is not boiling hot.
~ Lay the old news paper on the floor so any spillage will not dirty the floor.
~ Loosen the size 14 drain bolt.
~ Place the waste oil container below the drain bolt.
~ Open drain bolt. I use hand to open. The oil when come in contact with hand, its hot. But not boiling la.
~ Leave it drain until u are satisfied. I left it for about an hour.. :p
~ Now u can loosen (not open) oil filter while waiting for the oil to drip. Just loosen it will do. Open it now will spill oil to the floor. Wait!
~ Clean up the drain bolt and the outlet on the oil sump. Screw the bolt back in. No need very tight, just a slight torque using the size 14 wrench because you may damage the little bolt.
~ Drag the waste container until its directly under the oil filter.
~ Now open the oil filter with the oil filter wrench.
~ The oil filter is directly in the exhaust manifold, so its a little cramp in there. My little plastic oil filter opener get a little handful because get caught by the exhaust manifold. DON'T DO THIS WHEN ENGINE IS VERY HOT BECAUSE EXHAUST MANIFOLD CAN BURN YOUR HAND.
~ Once open the open filter, use toilet paper or tissue to clean the contact area and this is what it looks like:

~ Apply some fresh engine oil over the filter oil seal to wet it so it seats better.
~ Can actually hand tight the oil filter.. ;D
~ Pour in fresh oil, and measure using the dipstick. DON'T POUR IN THE WHOLE BOTTLE, WE DON'T THAT MUCH.
~ Start the engine, visually inspect for leakage.
~ If no leakage, take it for a short drive, then check again.
~ Stop the engine and check oil level again. Top up until it reached the MAX mark on the dip stick.
~ Check on leakages again the next morning and so forth (subsequent days to come) until you are comfortable.


This is the oil filter. I bought it from SC, very cheap only, don't risk getting from outside spare part shop just to save few Ringgit. Very different internal design.

Saturday, 4 July 2009

BMW E90 320i DIY Washing Air Filter "Sleeve"

I suspect nothing was done to my air filter during my 1st BSRI service last week at the SC. At 24k km I figured the OEM air filter is pretty clogged up because if its K&N, it would be pretty dirty at 20k km. Since our air filter element is covered/protected by a synthetic wool sleeve, it's washing time! :D

Refer here for instruction to open the AF box:

"Prying" open the air filter box after removing the several T-20 screws:

Separated the sleeve from the element:

Dip the sleeve into a bucket of water premix with dish cleaning detergent:

Moving the sleeve in and out of the soap water repeatedly for several minutes and this is what u get:

After cleaning, it dries pretty fast because the synthetic wool repels water:

Slot it back to the filter element and kao tim!

Now, expecting my all time FC meter to drop from 11.5L/100km to below 11 region.. :p :D

A new discovery while doing this DIY:

I got this Air Filter buffer box removed by unscrewing T-15 screws marked with the red cross in the photo.

Flipping it over I noticed the interesting rips and air tunnel EXCEPT the huge green question mark:

Check out the inlet in this close up:

When in position, pay attention to the right inlet:

You see what I see? :eek: