synthetics oils/ reg oil

[X-RAY]

Went to dealer sat to have my oil change( 2400 miles) the mobil 1 rep was there.so i ask about the dino /synthetics and break in.He handed me a booklet on the new oils they have out.Well as it turns out we all have good intensions with all the info we put out. It just that some are based on myths.Here is the link [url="http://www.mobil1.com/index.jsp"]http://www.mobil1.com/index.jsp[/url] so you can read what the people who make it have to say ...then you can make an informed choice ...

[RoundBoy]

Would you think that mobil one itself would not reccomend synthetic on all modern cars.. and dyno oil on older cars? Our models are not even on that list... too I don't know how you say that site has all the unbiased answers ?

[X-RAY]

I can not even spell unbiased answers.so if you read the post instead of reading in to the post it could be helpful.as to your ? i do not understand what you are asking.but here my answer read the manual,use what it says..

[Nick360]

The only experience i have with synthetic vs dino is that my WRX seemed to run just a slight bit smoother with synthetic, and it got about 1 mpg better mileage. Plus it seems to last a bit longer just by looking at it when i changed the oil. The synthetic looked "cleaner" upon draining then the usual black tar that came out of the pan when i changed it with dino oil. Just my .02 Nick

[miles]

[color=black][size=1]I remember a post on BOBISTHEOILGUY [/size][url="http://theoildrop.server101.com/cgi/ultimatebb.cgi"][u][color=blue]http://theoildrop.server101.com/cgi/ultimatebb.cgi[/color][/u][/url][size=1] that checked the manufacturers recommended viscosity of oil for the [u]same car - same engine[/u] but in different countries. The results showed that due to the pressures of the EPA in both the [/size][/color][size=1][color=black]U.S.A.[/color][color=black] & [/color][color=black]Canada[/color][color=black] our recommended oil was a 5w30 which is a lower viscosity (more fuel effecient) oil. For the same car in [/color][color=black]Germany[/color][color=black] & [/color][color=black]Australia[/color][color=black] (no EPA) the manufacturer recommended a higher viscosity oil (5w40, 10w40). [/color][/size] [color=black][size=1]Also, on the oil forum they tested different Mobil-1 oils.[/size][/color] [color=black][size=1]The top 3 were:[/size][/color] [color=black][size=1]1) Mobil Delvac-1... 5w-40[/size][/color] [color=black][size=1]2) Mobil-1 ............. 0w40[/size][/color] [color=black][size=1]3) Mobil-1 ............. 0w30[/size][/color] [color=black][size=1]The recommended oil viscosity chart in the North American manuals must be recommending dino oils. [/size][/color][color=black][size=1]Our manual recommends a 5w30 year-round to satisfy the EPA's fuel efficient rating. For cold weather starts a 5w30 dino oil is thinner than a 5w40 or 10w30 dino oil. Plus, the manual recommends the same oil viscosity year-round for someone in Texas, Alaska or anywhere in Canada.[/size][/color] [color=black][size=1]A synthetic 5w40 or 0w-40 will be better at sub-zero starts than a dino 5w30. Also, a synthetic 5w40 or 0w-40 will protect the engine better at high engine temperatures.[/size][/color] [color=black][size=1]I'm using Mobil-1 0w40 because:[/size][/color] [list] [*][color=black][size=1]It's a Group V synthetic oil (highest rating for a synthetic oil) [/size][/color] [*][color=black][size=1]Subaru's chart in our manual is referring to dino oils [/size][/color] [*][size=1]My dealership sells Mobil-1 0w-40 for year-round use. So, instead of paying the dealership $12/litre I'll buy Mobil-1 0w40 by the case at a local oil warehouse for $6.75/litre.[/size] [*][size=1][color=black]It's thin enough for low temperature starts (-10 to -40 in [/color][color=black]Canada[/color][color=black]) [/color][/size][color=black][/color] [*][color=black][size=1]In any season when the engine is warm it's about the same temp. [/size][/color] [*][color=black][size=1]With use any Xw40 oil will breakdown to a Xw39, Xw38, Xw37, Xw36, Xw35 ...etc. This can happen within 5,000 to 7,000 miles. [/size][/color] [/list][color=black][size=1]If you go onto this forum [/size][url="http://theoildrop.server101.com/cgi/ultimatebb.cgi"][u][color=blue]http://theoildrop.server101.com/cgi/ultimatebb.cgi[/color][/u][/url][size=1] some guys that I respect are Terry & MolaKule. They know what their talking about.[/size][/color] [size=1]To get a complete oil analysis [/size][size=1]I would get the free kit from Blackstone Labs and send your oil sample to them. Then have Terry Dyson (username Terry) do further analysis. [/size]

[agctr]

Miles, if you wont to post my findings to you in the PM I gave you, that would be great. Adam.

[Deer Killer]

Does anybody outside of the EPA's grasp run a 2.5 turbo? Regardless what do you guys get for viscosity recomendations? I was thinking 0w30 or 0w40, not sure yet if going to higher viscosity will be wise.

[Boostjunkie]

[quote name='miles'][color=black][size=1]I remember a post on BOBISTHEOILGUY [/size][url="http://theoildrop.server101.com/cgi/ultimatebb.cgi"][u][color=blue]http://theoildrop.server101.com/cgi/ultimatebb.cgi[/color][/u][/url][size=1] that checked the manufacturers recommended viscosity of oil for the [u]same car - same engine[/u] but in different countries. The results showed that due to the pressures of the EPA in both the [/size][/color][size=1][color=black]U.S.A.[/color][color=black] & [/color][color=black]Canada[/color][color=black] our recommended oil was a 5w30 which is a lower viscosity (more fuel effecient) oil. For the same car in [/color][color=black]Germany[/color][color=black] & [/color][color=black]Australia[/color][color=black] (no EPA) the manufacturer recommended a higher viscosity oil (5w40, 10w40). [/color][/size] [color=black][size=1]Also, on the oil forum they tested different Mobil-1 oils.[/size][/color] [color=black][size=1]The top 3 were:[/size][/color] [color=black][size=1]1) Mobil Delvac-1... 5w-40[/size][/color] [color=black][size=1]2) Mobil-1 ............. 0w40[/size][/color] [color=black][size=1]3) Mobil-1 ............. 0w30[/size][/color] [color=black][size=1]The recommended oil viscosity chart in the North American manuals must be recommending dino oils. [/size][/color][color=black][size=1]Our manual recommends a 5w30 year-round to satisfy the EPA's fuel efficient rating. For cold weather starts a 5w30 dino oil is thinner than a 5w40 or 10w30 dino oil. Plus, the manual recommends the same oil viscosity year-round for someone in Texas, Alaska or anywhere in Canada.[/size][/color] [color=black][size=1]A synthetic 5w40 or 0w-40 will be better at sub-zero starts than a dino 5w30. Also, a synthetic 5w40 or 0w-40 will protect the engine better at high engine temperatures.[/size][/color] [color=black][size=1]I'm using Mobil-1 0w40 because:[/size][/color] [list] [*][color=black][size=1]It's a Group V synthetic oil (highest rating for a synthetic oil) [/size][/color] [*][color=black][size=1]Subaru's chart in our manual is referring to dino oils [/size][/color] [*][size=1]My dealership sells Mobil-1 0w-40 for year-round use. So, instead of paying the dealership $12/litre I'll buy Mobil-1 0w40 by the case at a local oil warehouse for $6.75/litre.[/size] [*][size=1][color=black]It's thin enough for low temperature starts (-10 to -40 in [/color][color=black]Canada[/color][color=black]) [/color][/size][color=black][/color] [*][color=black][size=1]In any season when the engine is warm it's about the same temp. [/size][/color] [*][color=black][size=1]With use any Xw40 oil will breakdown to a Xw39, Xw38, Xw37, Xw36, Xw35 ...etc. This can happen within 5,000 to 7,000 miles. [/size][/color] [/list][color=black][size=1]If you go onto this forum [/size][url="http://theoildrop.server101.com/cgi/ultimatebb.cgi"][u][color=blue]http://theoildrop.server101.com/cgi/ultimatebb.cgi[/color][/u][/url][size=1] some guys that I respect are Terry & MolaKule. They know what their talking about.[/size][/color] [size=1]To get a complete oil analysis [/size][size=1]I would get the free kit from Blackstone Labs and send your oil sample to them. Then have Terry Dyson (username Terry) do further analysis. [/size][/QUOTE] All true and correct, except that M1 is a group IV (PAO) oil not a group v (ester) oil. It is also debatable in real world applications if a group V is truly superior to a group IV oil. Personally, I'm breaking-in for 10K miles on Chevron Supreme 5w-30 with 1.5oz/qt Valvoline Synpower oil treatment, then switching to my stash of 0w-30 German Castrol Syntec (a very thick 30 weight, almost a 40 weight).

[miles]

[quote name='agctr']G'Day Miles and thanks for the Post. Ok the preferred engine oil that Subaru Australia recommends is 5W - 30 but will allow 10W-30 & 10W 40. In areas where the tempretures are high, dusty or towing a lot you can use API Classification SJ or SH: SAE Viscosity No.: 30, 40 10W-50 20W-40 and 20W-50. Which my oil of choice is sort of in the range. Adam.[/QUOTE] Thanks agctr, I'll check my manual and post what it recommends.

[Ken S]

I've been reading through that oil forum a bit now and German Castrol (GC) seems to be quite popular. The downside is that it's hard to find. Mobil 1 Delvac 5W40 seems to be rated quite high. It appears as though the high temperature stability is a good match to our turbo engines. Ken

[miles]

[quote name='Ken S']I've been reading through that oil forum a bit now and German Castrol (GC) seems to be quite popular. The downside is that it's hard to find. Ken[/QUOTE] In the U.S., Castrol 0w30 (made in Germany) is sold at Autozone. In Canada it's sold at Wal-Mart and Canadian Tire.