For those experiencing poor FC after oil change at SA

[Genie47]

Syn oil very difficult to vaporize. Very difficult. If you light a match and throw into syn oil, most likely the fire will die!

 

Even dino oil also very difficult to burn. Sure will last up to 10k. If cannot, something is wrong with the engine.

[Godfinger]

I have his HP number since long ago.

Sms him but havent got a reply.

 

Guess he busy or not in town.

Anyway I have got the BKR5 plugs

so got to exchange with Shop later.

[Sotong_kia]

Then how to remove some oil ? dun tell me I have to crawl under my car ? or can I use a straw and suck up a pint ?

[Genie47]

Must remove the oil. Or best, next oil change, give them 3 X 1qt of oil. Tell them you don't have anymore and tell them don't top up and you will do so later. Once they let you have your car, drive to nearest MSCP and check dipstick. If OK, let it be if near to min mark, whip out your secretly kept extra 1qt of engine oil and top up to mid-point .

[Sotong_kia]

But for now ? Just came back from 5k Servicing last week..

think I have to take the suction device I use for my fish tank..

[Genie47]

Serious ah!

[Kopikao]

How about open the oil bottles and pour out some from each bottles then pass it to them... they would'nt suspect anything

[Genie47]

This is becoming ridiculous! Customers know more about servicing cars than the mechanics! And we are conspiring so that they do things right.

[Adrianli]

Syn oil very difficult to vaporize. Very difficult. If you light a match and throw into syn oil, most likely the fire will die!

 

Even dino oil also very difficult to burn. Sure will last up to 10k. If cannot, something is wrong with the engine.

 

 

I totally agree with u.

 

Lub oil dont burn at ambient temperature lah. Must heat up to its flash point temp for it to vaporise. Anyway its the vapour of the oil that burns. Should be around 60 degree C. Petrol flash point is low abt 25 degree C i think. Thatz why it will burn instantly coz our ambient temperature is around 28 - 30 degree C.

[Genie47]

Lube oil flashpoint is around 221 to 245 deg C.

[Adrianli]

I think I know why this is so.

 

The filled the oil all the way to the max level!

 

That is why I felt my FC drop when using the 5W20 when it should be giving me better FC. Tien and even Arah complained FC drop with the new oil. The filled it too full. The side effect of too much engine oil is poor FC and loss of power.

 

Ditto when they filled my car with CLTR 5W40. FC drop but returned when the oil thinned.

 

A good level when new oil is put in should be half point between the full and min level but never at full.

 

Why they filled max? I think this is old mechanic mentality. The old guard know that the engine oil will burn off and the level will reduce. This is not so with the new engine oils of today. Syn oil doesn't burn off. The dino oil of today are also very high quality and will be difficult to burn off as well.

 

 

I think the mechanic top up to max level is also to compensate the oil drained out from different parts of the engine. If oil level is topped up to min level, when u start engine it will definately drop further. Coz the oil will go to different parts of the engine to lubricate, filter n cooler.

 

The correct practice should be to top up to middle between max n min level, then start engine n let it idle for a while then check the oil level while its idling. It should go down, then top up to 3/4 between max n min level while engine still running. After top up, let it run around 5 more mins then shut off the engine n check the oil level again. It should be just nice at the max level mark.

 

But nowadays I see mechanics oil change very fast, skip lots of steps. Immediately after draining the oil, they top up to slightly above max level and run the engine n finish the job already. Bad practice.

[Lukie102]

vtim shld be in town. saw him at suntec on sat

[Sotong_kia]

I just checked my oil level this morning before starting engine.

 

Bloody engine oil ABOVE the MAX line !!!

 

Later afternoon I need to suck it out liao..

[Arah]

Spot on bro .

But now dont think these mech practise this style of oil change anymore.

Can still remember an old timer mech drain the oil already then he crank up the car but did not start it, few more ml of oil drain out only then he plug back the oil sum back. So most propably the oil did not drain fully and they top it up already .