Engine oil ?! I'm really confused

[BLOODY_STONE]

HI
i'm calling for help from EGYPT !
our toyota dealer here sucks and uses low-quality Mobil 1 fully synthetic motor oil 5w-40 ... Engine sound is too high! (10000 km so far)

I DON'T WANT TO USE THAT!!

right now , i'm using toyota genuine motor oil (20w-50) mineral oil .. (much smoother engine now)

(catalog says 20w-50 or 15w-40 multigrade SL)

HELP ME OUT GUYS ...

i'm doing okay or should i switch to synthetic ?
note : Driving in EGYPT is pretty bad! Heavy traffic + short distances + HOT Temp. (40C In summer & 8C in winter) ....

THNX!

[Liu997]

I would say the fully synthetic Mobile 1 is the superior oil

[BLOODY_STONE]

Originally Posted by Liu997

I would say the fully synthetic Mobile 1 is the superior oil

The reason i hate mobil 1 is that it is locally made in Egypt and its got low quality ! its color doesnt change even after 5000 km driving!!!

[Kongo-Otto]

My (genuine toyota) oil didn't change color after 6.000 km, too. I see no problem there. Mobil 1 FS oils are well known and high quality oils.

[BLOODY_STONE]

Originally Posted by Kongo-Otto

My (genuine toyota) oil didn't change color after 6.000 km, too. I see no problem there. Mobil 1 FS oils are well known and high quality oils.

well , from what i know , if ur oil doesnt change color , this means its doing bad job in cleaning ur engine interior ...
i guess many ppl can confirm that right?

plus , in EGYPT , its really dusty weather and low quality fuel , (can you imagine changing the air filter every15,000 km?!) so , my oil should be good enough in cleaning engine interior and handling heavy traffic!

[Kongo-Otto]

I don`t think the Toyota Genuine Oil is bad. 6000 km ain't much and we don't have any heavy conditions here. Car only got 13.000 km so there should not be much residue inside the engine.

[BLOODY_STONE]

Originally Posted by Kongo-Otto

I don`t think the Toyota Genuine Oil is bad. 6000 km ain't much and we don't have any heavy conditions here. Car only got 13.000 km so there should not be much residue inside the engine.

U r using toyota synthetic or mineral? cuz i'm really confused ... toyota genuine motor oil is available only in mineral in my country ...

[R2D2]

Oil color is not a really reliable method of determining how good of a job an oil is doing. Most folks I know with a Yaris report their oil stays very clean looking for long periods no matter what oil they use.

An oil turning dark quickly may simply be oxidizing and actually building engine deposits, to give an example.

Bottom line: choose any quality oil you like from 0W-20 to 20W-50, change at a reasonable interval, make sure your air filtration is working good and your Yaris will go further than most of us would ever care to drive them!

[Happy Little Pony]

Either oil should work. I wouldn't worry too much. Here in the US they spec 5w30 and 5w20 for the Yaris, so I wouldn't worry that a 40 weight oil might be too thin.

[BLOODY_STONE]

so , it wont matter if its synthetic or mineral ?

[why?]

Originally Posted by BLOODY_STONE

so , it wont matter if its synthetic or mineral ?

no. What does Toyota tell you to use in your car? For the US it is on the oil cap.

[Happy Little Pony]

Originally Posted by BLOODY_STONE

so , it wont matter if its synthetic or mineral ?

There's not a lot of difference in your scenario. In a warm weather climate with a car that doesn't have a high performance or turbo-charged engine, the benefits of a synthetic are minor. If you want to use a synthetic for a little more peace of mind, go ahead, but it probably won't affect the longevity of your engine to any great degree.

As long as you use a quality oil and change it regularly, I wouldn't worry.

[BLOODY_STONE]

Originally Posted by why?

no. What does Toyota tell you to use in your car? For the US it is on the oil cap.

nothing written on the oil cap ...

[BLOODY_STONE]

Originally Posted by Happy Little Pony

There's not a lot of difference in your scenario. In a warm weather climate with a car that doesn't have a high performance or turbo-charged engine, the benefits of a synthetic are minor. If you want to use a synthetic for a little more peace of mind, go ahead, but it probably won't affect the longevity of your engine to any great degree.

As long as you use a quality oil and change it regularly, I wouldn't worry.

All i need is outstanding protection & long life ... so all i should care about is interval changing not the type of oil ...

[Happy Little Pony]

Originally Posted by BLOODY_STONE

All i need is outstanding protection & long life ... so all i should care about is interval changing not the type of oil ...

Exactly. In an ideal situation, you can run a synthetic oil longer than a conventional because the synthetics tend to have a more robust additive package. But, as you describe, you live in less than ideal circumstances in a very dusty environment. That will be your problem. Keep an eye on your air filter and your air intake, making sure all of the seals are good and that there are no cracks or leaks. That will have more to do with you engine's lifespan than the oil will.

But especially keep watch on your cooling system. Check your coolant level regularly and watch for leaks! More engines end up on the scrap heap from coolant problems than from oil problems.

[R2D2]

Very well said, Happy Little Pony!

[BLOODY_STONE]

Originally Posted by Happy Little Pony

Exactly. In an ideal situation, you can run a synthetic oil longer than a conventional because the synthetics tend to have a more robust additive package. But, as you describe, you live in less than ideal circumstances in a very dusty environment. That will be your problem. Keep an eye on your air filter and your air intake, making sure all of the seals are good and that there are no cracks or leaks. That will have more to do with you engine's lifespan than the oil will.

But especially keep watch on your cooling system. Check your coolant level regularly and watch for leaks! More engines end up on the scrap heap from coolant problems than from oil problems.

big THANX!! considering synthetic oils ... what do you recommend?

[Viperoni]

I run Pennzoil Platinum 5w-30 that I get for $22 at Walmart and I take my car to lapping days, and I still change it every 2 lapping days or 9000kms, whichever comes first.

My oil has around 8000kms, has been through this past winter and a lapping day, and is dark brown.