Runner999 Posted January 1, 2011 Share Posted January 1, 2011 I changed my oil and filter on my 05 LGT and noticed I bought 5w-20 Mobil 1 instead of 5w-30. Will I be ok in the winter with temps running 40F to -5F outside? Link to comment Share on other sites More sharing options...
Max Capacity Posted January 1, 2011 Share Posted January 1, 2011 I would guess yes, but if it was my car, I'd replace it with 5-30 or 5-40. You do know how warm it is out today... 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
ehsnils Posted January 2, 2011 Share Posted January 2, 2011 NO! You will NOT be OK. 5W20 will NOT be good for the engine, it will be way too thin when the engine is warm. If the oil gets too thin when it's warm you will run the risk of getting contact between bearing surfaces which is a VERY bad thing - and that may mean a new engine. What you should look at is 0W30, 5W30, 0W40 or 5W40. You can use 10W30 too, but it will cause higher fuel consumption in cold weather and make cold starts harder. See also this thread: http://legacygt.com/forums/showthread.php/clearing-up-all-oil-info-79800.html Link to comment Share on other sites More sharing options...
Dutch Eagle Posted January 2, 2011 Share Posted January 2, 2011 When you want the best oil for very cold winters the only thing that matters is looking at the X as is XW40 The X stands for the viscosity when cold.(The 40 in this case for warm engine) When cold starting it is important to have the quickest lubrification possible. If you normally use 5W50 or 5W40 which are proven to be the best on a 2.0 or 2.5 turbocharged engine, you good go to a 0W40/50 when winters get very cold. But in normal winterconditions I would just stay with the 5W40/50. It will do fine when you take the time warming up the engine.(Up to 15 minutes when really cold) Allways using the same brand and viscosity is the best thing for your engine anyway.* *Info from an enginebuilder/revisor. Link to comment Share on other sites More sharing options...
ehsnils Posted January 2, 2011 Share Posted January 2, 2011 Just a curious question - where do you get 0W50??? Anyway - for a stock engine I think that xW50 isn't necessary, especially if the engine is rated for xW30. Going to xW40 is enough. Link to comment Share on other sites More sharing options...
Dutch Eagle Posted January 2, 2011 Share Posted January 2, 2011 It was just as an example. But here you go: http://www.iapdirect.com/images/T/SAE-0W-50.jpg http://2475-dragzine.voxcdn.com/files/2010/11/mobil1.jpg Ha det bra! Link to comment Share on other sites More sharing options...
GEE-OTTO Posted January 3, 2011 Share Posted January 3, 2011 yeah you should skip the 0W-50 and go back to 5w-30 or 5w40 LOL its that simple or risk a spun bearing Link to comment Share on other sites More sharing options...
ehsnils Posted January 3, 2011 Share Posted January 3, 2011 yeah you should skip the 0W-50 and go back to 5w-30 or 5w40 LOL its that simple or risk a spun bearing You mean that he should skip the 0W20... Link to comment Share on other sites More sharing options...
rao Posted January 3, 2011 Share Posted January 3, 2011 Subscribed Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
Max Capacity Posted January 3, 2011 Share Posted January 3, 2011 ENEOS, 0w/50 have that in the trailer for the race car. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
boymk123 Posted January 4, 2011 Share Posted January 4, 2011 so whats up with all the honda engines? they use 5w20? does different engine design really effect on oil choice? or just simply for fuel saving? Link to comment Share on other sites More sharing options...
ObiWanToby Posted January 4, 2011 Share Posted January 4, 2011 A specification is a specification. Certainly the thickness affects the protection levels, but honestly I wouldn't be crazy worried about 5w20. I wouldn't use it by choice but it is still doing its job. Link to comment Share on other sites More sharing options...
Whatisit Posted January 4, 2011 Share Posted January 4, 2011 a buddy of mine is a honda tech. His observation is that ever since honda switched to 5w20, motors with higher milage cars are comming back with high cam wear issues. Honda's never used to have any sort of engine problems before with its 5w30. Also, when you change the oil on a honda with 5w20, the old oil comes out looking like black water. I personally would not trust using it in a higher stressed turbo motor. Link to comment Share on other sites More sharing options...
ehsnils Posted January 4, 2011 Share Posted January 4, 2011 so whats up with all the honda engines? they use 5w20? does different engine design really effect on oil choice? or just simply for fuel saving? The engine design has an impact on the oil choice. Bearing surfaces is somewhat like a boat. Floating a boat in fresh water allows it to take a certain load. If you take the boat in the dead sea which is a "thicker" water you can put more load in it but if you float it in alcohol it can't take much load before it sinks. Not a completely accurate analogy but good enough. And see it this way too: A 20-oil has a thinner oil wedge and drains away faster than a 30-oil and a 40-oil has an even thicker oil wedge and sticks around longer. As for the Honda oil choice - it's probably OK in Japan where cars are expected to hold together for only a few years up to around 60k miles. But in many other parts of the world cars are expected to hold together for 200 to 300k miles aside from ordinary wear and tear parts. Link to comment Share on other sites More sharing options...
boymk123 Posted January 4, 2011 Share Posted January 4, 2011 so do you suggest me to use 5w30 even in the honda? Link to comment Share on other sites More sharing options...
Max Capacity Posted January 4, 2011 Share Posted January 4, 2011 so do you suggest me to use 5w30 even in the honda? I would do that, in some/most cases going to a thicker oil is a somewhat normal practice for a lot of us. It's not going to hurt anything. I run 10w30 or 15w40 in the summer. In the GF's 08 Escape I run 5w20 in the winter and 5 or 10w30 in the summer. The main thing is to change the oil and filter at or sooner (depending on how you drive and the outside air temp) then the book say's too. I'm 56 y/o and having been doing all my oil changes since my first car at age 16. I have only had one oil related failure, but that was Quaker States fault back in the mid 70's. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Mega Users seabass07 Posted January 4, 2011 Mega Users Share Posted January 4, 2011 So what changed in the new subaru engine to allow 5w20? The dealerships sell it. It is being recommended for the newer engines that are still under warranty. It is not going to be as big a deal as this is being made out to be. I would not use it because I'd be afraid of it being consumed very quickly in my car. Going up to a 40 or higher oil is only necessary when compensating for something, like penis size, consumption or higher operating temps due to weather or abuse. You don't really get added wear protection from the thicker oil. It is wasted on a car that is not being driven hard. As long as it is not mobil-1 being put in your engine, you're ok. Edit: shit it is mobil-1. You're already screwed. It's too late. Link to comment Share on other sites More sharing options...
ehsnils Posted January 4, 2011 Share Posted January 4, 2011 so do you suggest me to use 5w30 even in the honda? Yes. Link to comment Share on other sites More sharing options...
mustangendsley Posted January 4, 2011 Share Posted January 4, 2011 -19 deg this am. I always use 5w30 and it starts right up. No need to change to a 5w40/50. Im also at stage 2. Link to comment Share on other sites More sharing options...
Max Capacity Posted January 4, 2011 Share Posted January 4, 2011 FWIW, I've been told with these boxers a little thicker oil is not a bad thing. IMO a 5w40 would be a good choice. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Zac88 Posted January 5, 2011 Share Posted January 5, 2011 I use 5W40 Still waitning to see how it starts at -40 Link to comment Share on other sites More sharing options...
rao Posted January 5, 2011 Share Posted January 5, 2011 It seems to me that an oil like Eneos 0w70 would be ideal since it covers all possible conditions. Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
DirtyDan Posted January 5, 2011 Share Posted January 5, 2011 Gee, you guys really don't know squat about oil. First, oil weight has little to do with film strength. Oil weight is a measurement of oil flow, not how strong the oil film is. Film strength is how much force it takes to allow metal to metal contact. I can show you a 5w oil that has twice the film strength of a 50w oil. Second, multi-viscosity oil is done with additives. Low number shows the flow rating until the oil reaches 140 degrees, then you are at the higher number. 3rd, which Mobil 1 oil are you talking about? If it's not the 15,000 mile rated oil, it's not a full synthetic. Link to comment Share on other sites More sharing options...
rao Posted January 5, 2011 Share Posted January 5, 2011 That makes no sense, otherwise why would 50 weight oil be racing oil? Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
Max Capacity Posted January 5, 2011 Share Posted January 5, 2011 I use 5W40 Still waitning to see how it starts at -40 I guess your new to this oil thing, 5 is the cold rating. The will start fine...as long as the battery holds out. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
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