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From: Steve on 9 Oct 2007 11:20 Mark A wrote: > "Built_Well" <Built_Well_Toyota(a)hotmail.com> wrote in message > Mark, you > finally said something intelligent. > >>Good for you. >> >>However, continue to avoid the 0w-30 oils lest they >>bite you on the nose - LOL > > > I will continue to avoid 0W-30 unless an ice age returns, or I move to > Alaska. > > Or, maybe, you buy an engine that specifies a 0w30 oil..... :-) Personally I greeted the oddball 5w20 rating with a lot of skepticism, however a lot of OEMs do specify it. I'm sure that the main reason is to improve CAFE mileage performance, but its also a perfectly adequate lubricant for those engines.
From: tnom on 9 Oct 2007 15:26 On Mon, 08 Oct 2007 08:11:10 -0500, "*" <nospam(a)this.addy.com> wrote: > > >Not only do you have Mobil-1 spelled wrong, you have the entire concept of >multi-viscosity oils backwards. > >When you shut your hot engine off at night, a 10w-30 oil has the viscosity >of a 30 weight, while in the morning, when it is cooler, it has the >viscosity of a 10 weight. > >Your "expert" had better stick to passing out pills and doing digital >rectal exams. > >He, apparently, needs a few more decades to get the multi-viscosity concept >correct. > You have the problem. You can't see the difference between your statement and his. Let me simplify it for you. His statement: When cool 10W-30 oil has a viscosity of 90. Your statement: When cool a10W-30 oil has the viscosity of a 10 weight oil...............hint:(10W oil has a viscosity of 90 at cool temperatures)
From: tnom on 9 Oct 2007 15:34 >I refer folks to some of Dr. Haas' writings at this web page: > >http://ferrarichat.com/forum/faq.php?s=24e0725dc8adb142babe1958586368ba&faq=haas_articles#faq_motor_oil_basics There's more to oil selection than just this viscosity argument. The wider the range, 0w-50 compared to 10w-30,the more solid particles are included in the formula. The particles under heat, stress and age can settle out and contribute to forming sludge. So it's best not to use an oil at a wider range than you actually need.
From: Mark A on 9 Oct 2007 22:47 "Steve" <no(a)spam.thanks> wrote in message news:9eSdnYLR9JHNAZbanZ2dnUVZ_s3inZ2d(a)texas.net... > Or, maybe, you buy an engine that specifies a 0w30 oil..... :-) > > Personally I greeted the oddball 5w20 rating with a lot of skepticism, > however a lot of OEMs do specify it. I'm sure that the main reason is to > improve CAFE mileage performance, but its also a perfectly adequate > lubricant for those engines. Yes, I would use it if the manufacturer specified it. But this is a Toyota forum, and to my knowledge that has not happened yet (and especially for the specific models mentioned in this thread).
From: Mark A on 9 Oct 2007 23:02
> "Steve" <no(a)spam.thanks> wrote in message > news:9eSdnYLR9JHNAZbanZ2dnUVZ_s3inZ2d(a)texas.net... > Or, maybe, you buy an engine that specifies a 0w30 oil..... :-) > > Personally I greeted the oddball 5w20 rating with a lot of skepticism, > however a lot of OEMs do specify it. I'm sure that the main reason is to > improve CAFE mileage performance, but its also a perfectly adequate > lubricant for those engines. If I ever did purchase a car that specified 5W-20, I might switch to Mobil 1 Extended Performance, which is not considered an energy saving formula compared to regular Mobil 1. This would give me the extra protection that might be needed with a 5W-20, and at the same time get better mileage than a regular 5W-30 synthetic. |