5W30 mineral oil

[Leo C.]

I agree. Porsche uses Mobil 1 synthetic as factory fill so it goes through the break-in process using synthetic oil.

However Redline says to use conventional oil during break-in: http://www.redlineoil.com/techinfo_faq.aspx    :dontknow:

One of the purposes of engine break-in is to seat the piston rings to the cylinder walls. Maybe, since high-end cars, like Porsches, have better improvements in cylinder-walls surfaces and piston ring design or use better materials inside the engine, they don't need the seating-in as required by other ordinary cars.  Maybe this is the reason why they are factory filled with synthetic oils. Corvettes, Porsches, Aston Martins, are also factory filled with synthetics.

For low-end cars, imo,mineral oil is needed for break-in because they need the seating-in process. If synthetics are used, it would be too slippery and breaking in would be difficult.
:dontknow: :dontknow:

[aid03]

heres a list of cars using mobil1 as factory fill. not all of them are high-end cars.
http://www.mobiloil.com/USA-English/MotorOil/Synthetics/Myths.aspx

it's a highly debated subject. imo, use whatever makes you feel comfortable and sleep good at night. it's all preference i guess. im just thinking sayang yung pera since you already paid for motul w/c is quite pricey and youve put 1000km on conventional oil anyway.

[alexanderb]

you can use honda casa's Idemitsu 10W30 mineral oil!   you can also try FK Massimo's Super SS-X 10W30. (if your engine's minimum API requirement is SJ)

Would anyone know if Honda's Idemitsu 10W30 oil is API SM certified? I went to Honda today and it was not indicated on the bottle if it was API SM certified.  :dontknow:

[Zenki]

One of the purposes of engine break-in is to seat the piston rings to the cylinder walls. Maybe, since high-end cars, like Porsches, have better improvements in cylinder-walls surfaces and piston ring design or use better materials inside the engine, they don't need the seating-in as required by other ordinary cars.  Maybe this is the reason why they are factory filled with synthetic oils. Corvettes, Porsches, Aston Martins, are also factory filled with synthetics.

For low-end cars, imo,mineral oil is needed for break-in because they need the seating-in process. If synthetics are used, it would be too slippery and breaking in would be difficult.
:dontknow: :dontknow:

Hmmm... so maybe alexanderb  does not need the mineral oil also since his car is a high end Z car.  I don't know but many experts are still debating on this. Cars and bikes actually. But AFAIK there are regular econoboxes out there that also use synthetic oil out of the factory. Just like what Mobil 1 says about the "myth" in all this.

[Leo C.]

Hmmm... so maybe alexanderb  does not need the mineral oil also since his car is a high end Z car.  I don't know but many experts are still debating on this. Cars and bikes actually. But AFAIK there are regular econoboxes out there that also use synthetic oil out of the factory. Just like what Mobil 1 says about the "myth" in all this.

Of course, Mobil 1 will tell you to use synthetics, especially thier product. Hehe!  You're right about the debate. Onother debate is "Is Mobil 1 really 100% synthetic" ? Oils are made up of base oils and other additives. Mineral base oil or PAOs, Synthetic base oils,etc.   Mobil 1, of course, uses 100% synthetic Base Oils but they mix additives what they call as "propreitary additive system" or "propreitary system of additives".    Proprietary system means, owned or copyrighted, and not for public disclosure. Are these additives synthetic based or mineral. Nobody will ever know because it is a Company secret.  Other Synthetic Oil brands also mix thier oils with "proprietary additives". :evilgrin2:

Late in 1997, Castrol changed the formula of its Syntec "full synthetic motor oil", eliminating the polyalphaolefin (PAO) base stock (that's the "synthetic" part, which makes up about 70% by volume of what's in the bottle) and replacing it with a "hydroisomerized" petroleum base stock which is a Group III highly refined mineral oil marketed as "synthetic oil" in the USA. So, Castrol Syntec Full Synthetic is both synthetic and not synthetic.  :dontknow:

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[aid03]

mobil1 also has regular oil and not all mobil1 full synthetic products are group III refined oils. They also have the european blend oils. It's been discussed here in the forums before that usually anything that says full synthetic is a highly refined group III oil. and oils labeled as 100% synthetic are the group iv and up oils.

anyway, changing the oil after 1000km to synthetic should be fine imo. some would disagree but ive never met anybody break their engine after switching to synthetic. my 2cents

[alexanderb]

mobil1 also has regular oil and not all mobil1 full synthetic products are group III refined oils. They also have the european blend oils. It's been discussed here in the forums before that usually anything that says full synthetic is a highly refined group III oil. and oils labeled as 100% synthetic are the group iv and up oils.

anyway, changing the oil after 1000km to synthetic should be fine imo. some would disagree but ive never met anybody break their engine after switching to synthetic. my 2cents

I guess you're right. I guess I'm just itching to change to mineral oil. hehehe. It looks like I'll be sticking to synthetic then because it is SOOOO HARD to find a mineral oil that is xxW30 that is API Certified SM... I'm almost to the point of giving up...



Post Merge: September 23, 2010, 03:03:58 PM
This is really getting frustrating!  :furious: Everywhere I look they only have xxW40 oils! What's up with that? I'm sure there must be cars here that use multigrade 30 weight mineral oils!

Just wanted to rant...hehehe 

[Brent]

I guess you're right. I guess I'm just itching to change to mineral oil. hehehe. It looks like I'll be sticking to synthetic then because it is SOOOO HARD to find a mineral oil that is xxW30 that is API Certified SM... I'm almost to the point of giving up...



Post Merge: September 23, 2010, 03:03:58 PM
This is really getting frustrating!  :furious: Everywhere I look they only have xxW40 oils! What's up with that? I'm sure there must be cars here that use multigrade 30 weight mineral oils!

Just wanted to rant...hehehe 

Most API SM-rated xxW30 oils are synthetic. Bridgestone Tire Center Fort should still have HTEC100 Plus 5w30 SM-rated oil in stock.