conventional vs synthetic oil for car, which is better?

[ClutchClark]

On November 20, 2016 at 10:54 AM, Lokie said:

On November 19, 2016 at 2:19 PM, ClutchClark said:

 

Not 'my' argument? I said 'The' argument (discussion/questions) 

 

My mistake.

 

Please accept my apology.

[sotsira]

16 hours ago, questionsreplies said:

Bmw now changes oil every 25000kms, benz still 10000 but both use synthetic, i wonder why ? but service being free at bmw during 5 years, ir might be the reason...

 

It's no longer the case with BMW revising the schedule back to

10000mls, = 16000kms or 12 months.

http://f30.bimmerpost.com/forums/showthread.php?t=868291

[Strange]

On 11/21/2016 at 6:31 PM, questionsreplies said:

Bmw now changes oil every 25000kms, benz still 10000 but both use synthetic, i wonder why ? but service being free at bmw during 5 years, ir might be the reason...

 

Its because its using a synthetic and synthetics last longer than conventional. They resist fuel contamination while retaining viscosity. 

 

This, combined with modern engine building techniques & machining, modern piston rings, ring gap is down to a science and some higher tech engines are using gapless piston rings, and todays crankcase ventilation, all do a real good job at keeping fuel in the combustion chamber and not blowing by into the crankcase and contaminating the oil. 

 

Its just as much the tech as it is the oil. 

 

Same goes for what sotsira said above. 

[questionsreplies]

On 11/22/2016 at 11:21 AM, sotsira said:

 

It's no longer the case with BMW revising the schedule back to

10000mls, = 16000kms or 12 months.

http://f30.bimmerpost.com/forums/showthread.php?t=868291

 

 

Wrong for new bm bought in thailand.

 

 

[questionsreplies]

On 11/22/2016 at 11:42 PM, Strange said:

 

Its because its using a synthetic and synthetics last longer than conventional. They resist fuel contamination while retaining viscosity. 

 

This, combined with modern engine building techniques & machining, modern piston rings, ring gap is down to a science and some higher tech engines are using gapless piston rings, and todays crankcase ventilation, all do a real good job at keeping fuel in the combustion chamber and not blowing by into the crankcase and contaminating the oil. 

 

Its just as much the tech as it is the oil. 

 

Same goes for what sotsira said above. 

 

 

Wrong because there is no difference between new benz and new bmw, i own both.

 

 

 

[questionsreplies]

On 11/20/2016 at 3:52 PM, JAS21 said:

My 520d also used a fully synthetic ...after a service it showed the next change at +30,000Kms. 

 

I will be posting a topic in this forum in the next couple of days or so but I look forward to your imput ... ☺

 

 

 

 

If you plan to keep your car aftet BSI expires you should not wait that long, especially in thailand...

 

 

 

[Strange]

3 minutes ago, questionsreplies said:

Wrong because there is no difference between new benz and new bmw, i own both

 

Nothing wrong at all in what I said. Typical conventional oil changes are 3000 miles and with modern engines and synthetics its in some cases 5-6-10,000 miles. Its a combination of tech and synthetics thats getting it done. 

[Strange]

2 minutes ago, questionsreplies said:

If you plan to keep your car aftet BSI expires you should not wait that long, especially in thailand...

 

What does Thailand have to do with anything? 

[sotsira]

1 hour ago, questionsreplies said:

 

 

Wrong for new bm bought in thailand.

 

 

 

Irrelevant of which country you buy a BMW, the service schedule warning lights

are only there to remind, or set as a guide, for the owner to change the oil.

 

I've owned 3 different BM's when i lived in the UK, the last two being 530d and 

then a 330d, with both, i ignored the oil service light intervals and always changed the oil & filter every 5000mls with fully synthetic.  

The 530d clocked up 210k miles and the 330d 150k miles without any engine 

problems before i sold them.

I also removed the cam cover on the 530d to replace the gasket at around 180k

miles and the inside showed to be still very clean.

[questionsreplies]

On 11/24/2016 at 3:55 PM, sotsira said:

 

Irrelevant of which country you buy a BMW, the service schedule warning lights

are only there to remind, or set as a guide, for the owner to change the oil.

 

I've owned 3 different BM's when i lived in the UK, the last two being 530d and 

then a 330d, with both, i ignored the oil service light intervals and always changed the oil & filter every 5000mls with fully synthetic.  

The 530d clocked up 210k miles and the 330d 150k miles without any engine 

problems before i sold them.

I also removed the cam cover on the 530d to replace the gasket at around 180k

miles and the inside showed to be still very clean.

 

 

you are living in the past...

 

driving a toyota now ?

 

 

;-)