QUOTE(cute_boboi @ Jul 30 2012, 02:20 PM)
How much higher on the dipstick ? 1mm ? 5mm ? 10mm ?
Try do few more daily cold-check.
It's like 5mm higher than last time reading, 2 days ago.
I suspected petrol mix into it. No solid evidence yet. but I checked just now in afternoon, it backs to normal.
checked through net, found this :
""""-In certain cases, the oil level may have risen since the last time you checked. This could be due to condensed water (from combustion), condensed fuel or a coolant leak - all are causes for concern.
-Fuel-diluted motor oil (from blow-by or leakage) can substantially reduce oil viscosity and thin additive concentration. The odor of diesel fuel can often be detected right from the dipstick.
-Free and emulsified water is harmful to the oil and the engine. For short-trip drivers, water condensation may be more acute if your engine has the flexible fuel vehicle (FFV) option and you are burning an alcohol-gasoline fuel blend. It is important to remember that combustion produces water in your engine - more water than the fuel consumed. Most of the water goes out the tailpipe, but if the engine is cool, much of it may condense in the crankcase.
-A simple way to detect water in used motor oil is to put a drop of oil from the dipstick on a hot exhaust manifold. If it crackles (sounds like bacon frying) this is an indication of water contamination. Beware that there is some risk that the drop of oil may catch fire.
-Brand new automobiles imported from Japan may have a high oil level due to short-run engine starts (as many as 50) required when the vehicle is transported from the assembly plant, across the ocean, and finally to the dealer’s lot. In this case, an oil and filter change may be merited.
-Coolant leak is a serious problem relating to high oil level. See Lesson No. 5.
Whatever the cause of the high oil level, the condition needs to be quickly corrected.
Note: accidental overfilling oil into your engine can cause problems too. As the crankshaft rotates it will churn the oil, causing aeration and eventually sustained foam may form. This can lead to overheated motor oil, oxidation and a loss of oil pressure. Spongy aerated oil is hard to pump. It starves the engine and critical lubricated surfaces."""""
http://www.mycarforum.com/index.php?showtopic=2650644&st=60So I guess it fuel mix, as no contamination in my radiator.
Added on July 30, 2012, 2:56 pmQUOTE(samfisher @ Jul 30 2012, 02:21 PM)
nope...

...15 years old car...maybe is it the time to change it?....any other possibility to confirm it is the driveshaft problem?...

You have every reason to change the car

even if it is 5months old
few common causes led to vibration at high speed
: 1, uneven tyres (includes imbalance tyre),
2, deformed rims,
3, problematic absorber and
4, drive shaft issue.
as you noted there is tak tak tak when you threw your car into corner, 1 and 2 are irrelevant, I have no experience in 3
4 is safer guess and also I had experienced when the ball joint gao dim liao.
sifu-sifu should be able to give you mroe accurate answer.
This post has been edited by outpace: Jul 30 2012, 02:56 PM