This is another burning question. Well of course in the first place the oil must comply with ACEA specifications and have the right viscosity rating [forget about API specifications for EP6-series engine, leave the American Spec alone! 308 engine is European].
The engines rotating parts are protected from heat and friction by a thin layer of oil. Understanding the viscosity ratings and detergents used in today's modern oils is critical to keeping Peugeot 308 Turbo engines running effectively/efficiently.
Now what does viscosity rating [e.g SAE 30] mean?
Viscosity refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Many ppl think that multigrade oil [such as 5W-30] thins at low temperature and thicken at high temperature. WRONG. The oil always thicken at low temperatures and thins, i.e more fluidity at high temperatures.
Then what does 0W-40, 0W-30, 5W-30, etc. means?
For instance single grade oil, such as SAE30, SAE40, SAE50, etc. thicken as honey when freezing cold and thins like cooking oil when hot. It looks ok to use this grade of oil at operating temperatures but hardly flow [unusable] when cold. Now take a look at oil with SAE5 or lower. This oil grade will thicken like cooking oil when cold but thins like water or alcohol at operating temperatures, i.e suitable for low temperatures but loss lubricating property hence not suitable when hot.
Now seems that the engine needs two different viscosity grades [SAE] of lubrication for starting at cold temperature and another one grade at operating temperature.s What about the intermediate temperatures during warming up? Nah, now it looks like the engines need several viscosity grades of oil for different engine temperature.
Hence MULTI-GRADE OIL such as Mobil 1 0w-40, Syntium 5W-30, etc. were "invented" to meet certain low temperature and high temperature requirements simultaneously.
By adding polymers to regular or synthetic oil, chemical engineers can produce an oil that has variable effective viscosity grade depending on its temperature. Before the engine warms up, the polymers contract and float around without purpose. As the engine reaches operating temperature, the polymers expand to ensure that the oil's viscosity will not fall beyond the lower grade rating.
The worst routine engine wear occurs when we start the car. All the oil is in the oil pan, instead of being distributed throughout the engine and turbo. If we used a very thin oil, we could quickly pump our engine its lifeblood through those tiny passages. However, by the time we just about to engage 'D' or the 1st gear the oil would be too thin to separate the pistons from the cylinder walls and we have a seized piston.
The multigrade oil is the answer to our prayers. We get a relatively thin oil for our startups and warming up and a higher relative weight when it's "hot" (i.e at the engine operating temperature).
Peugeot Australia recommends 0W-30, 5W-30 oil for Peugeot 308 petrol engines.
Click HERE for oil terminology.
The engines rotating parts are protected from heat and friction by a thin layer of oil. Understanding the viscosity ratings and detergents used in today's modern oils is critical to keeping Peugeot 308 Turbo engines running effectively/efficiently.
Now what does viscosity rating [e.g SAE 30] mean?
Viscosity refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Many ppl think that multigrade oil [such as 5W-30] thins at low temperature and thicken at high temperature. WRONG. The oil always thicken at low temperatures and thins, i.e more fluidity at high temperatures.
Then what does 0W-40, 0W-30, 5W-30, etc. means?
For instance single grade oil, such as SAE30, SAE40, SAE50, etc. thicken as honey when freezing cold and thins like cooking oil when hot. It looks ok to use this grade of oil at operating temperatures but hardly flow [unusable] when cold. Now take a look at oil with SAE5 or lower. This oil grade will thicken like cooking oil when cold but thins like water or alcohol at operating temperatures, i.e suitable for low temperatures but loss lubricating property hence not suitable when hot.
Now seems that the engine needs two different viscosity grades [SAE] of lubrication for starting at cold temperature and another one grade at operating temperature.s What about the intermediate temperatures during warming up? Nah, now it looks like the engines need several viscosity grades of oil for different engine temperature.
Hence MULTI-GRADE OIL such as Mobil 1 0w-40, Syntium 5W-30, etc. were "invented" to meet certain low temperature and high temperature requirements simultaneously.
By adding polymers to regular or synthetic oil, chemical engineers can produce an oil that has variable effective viscosity grade depending on its temperature. Before the engine warms up, the polymers contract and float around without purpose. As the engine reaches operating temperature, the polymers expand to ensure that the oil's viscosity will not fall beyond the lower grade rating.
The worst routine engine wear occurs when we start the car. All the oil is in the oil pan, instead of being distributed throughout the engine and turbo. If we used a very thin oil, we could quickly pump our engine its lifeblood through those tiny passages. However, by the time we just about to engage 'D' or the 1st gear the oil would be too thin to separate the pistons from the cylinder walls and we have a seized piston.The multigrade oil is the answer to our prayers. We get a relatively thin oil for our startups and warming up and a higher relative weight when it's "hot" (i.e at the engine operating temperature).
Peugeot Australia recommends 0W-30, 5W-30 oil for Peugeot 308 petrol engines.
Click HERE for oil terminology.
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14 comments:
thanks for the info uncle ahwan, much appreciated..
U r most welkom Azhelmi.
I'm here to share my limited knowledge on motoring, especially related to 308 Turbo and Peugeot in general. At the same time I'll jot down what came across my mind, or find out on the internet related to Peugeot to share.
Sadly to say, lately AutoWorld forum has become a forum of NASIM/Peugeot bashers. Nothing much space and attention for sharing good stories.
I have a feeling there is some kind of conspiracy/propaganda and I hope ppl will realise and will not fall into the trap.
From now onwards any request as a reader to this blog will be filtered and asked for authenticity. Some of 'pengacau' at usual auto forums will be ultimately removed as readers of this blog. I just welcome genuine Peugeot Lovers.
Regards.
yup, agree with you uncle, as a newbie owner of Peugeot, sometimes i feel sad when some of the non-pug owner bashing our lion...
As I wrote in AW forum, I don't mind anyone who share his own misadventure but there are some quarters either don't own the 308 by himself or don't even have any Peugeot but making so much statements and bashing.
Worse still there are guys who seem to be an expert on Peugeot cars that they don't have often give WRONG and misleading advices and treat others as "know nothing" what they were trying to tell or "instruct" to do.
Racist or "smell like racist" statements [some were deleted by moderators already] had began to surface at AW forum. I'm monitoring closely and will act accordingly within my capacity.
BTW for true Peugeot lovers, I'll share my "Peugeot Adventure" with u all right here, a blog specially created for u.
Best Regards.
uncle.D,
zubairauto here :)
i just bought myself from PH Auto PJ Mobil 1 0W-40
cost me a bomb!
bought 4L for RM200 and another 1L for RM55
I'm due for first 2500km checkup next thursday.
after seeing the mobil video on turbo
http://www.mobil1.my/media/video/Mobil1_Turbo_1016.wmv
feels like wanna change oil next thursday to mobil 1 already :P
what do you reckon, should be ok to wait until first 10k km service right?
Hi zubairauto,
u don't have to change the oil at 2500km service. Wait until 10,000km. Probably only Japanese and Protons cars need oil change during first inspection.
I learned that Mobil-1 can tahan till 20,000km even for turbo engines. I'll contact Mobil and tell the outcome. I remember when Mobil 1 was introduced it could last 40,000km or 12-month w.c.f for normal cars and 20,000km~30,000km for turbos - depends on which car.
uncle. D.
Thanks for all your interesting tales and advice on the 308. Tough time separating the facts from the myths especially with all the information floating out there, and your blog goes a long way towards that.
Cheers and keep it up! ;p
p.s. am using Mobil 1 too and the engine does feel lighter.
Skywalker1,
Thanks
What lubricant do you use?
Would you recommend Syntium 5000 0w-30 or Syntium 3000 5W-40?
I use Mobil-1 'gold' 0W-40
Alternatively u can also use cheaper:
Syntium 5000 0W-40 or
TOTAL Quartz Energy 0W-30
I've got good price for Syntium 5000. So should I use 0W-30 or 0W-40. Syntium 5000 have both.
For normal driving it is better to follow Peugeot recommendation, i.e 0W-30 or 5W-30.
If the car is always pushed near redline 0W-40 or 5W-40 is more suitable to prevent 'thinning' at high temperatures.
Thanks for the tip uncle.D
I don't recall pushing to redline before. So think I will stick to 0W-30.
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