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From: Built_Well on 7 Oct 2007 21:49 Ray O wrote: > Built_Well wrote: > >> tony pac wrote: >> >>> Being that this car has only 2500 miles on it I was told by my Toyota >>> dealer to wait until I have 20,000 miles before switching over to >>> synthetic oil,and how does effect my warranty as far as oil >>> changes,every 6 months?My dealer only carry's Mobil 1. >> ======== >> >> The Toyota dealer is mistaken, kinda like that nice but confused >> Walmart automotive manager who believes 0w-30 doesn't exit ;-) >> >> 2,500 miles of break-in is plenty to now switch over to >> synthetic in the Corolla. >> ======== > > This information is contrary to Toyota's advice. Toyota recommends waiting > until the first recommended oil change interval before switching to > synthetic. ======== Thanks for clearing that up, Ray. Would Toyota object if we put 0w-30 oil in the Camry instead of the 5w-30 recommended in the manual? I wouldn't switch to 0w-30 while the car is under warranty, but might consider it after the warranty period is over.
From: Built_Well on 7 Oct 2007 22:34 Mark A wrote: > What do you mean, would they object? They specify 5W-30 for the car. If > anything, if your car has a lot of miles (over 100K) and/or some engine wear > (perhaps from using conventional oil) you should consider switching to > 10W-30, not 0W-30. ======== Try reading more carefully, Mark A. I did not say my Camry has over 100,000 miles on it. It doesn't even have 9 k on it, so, 0w-30 is an option, even though it's not in the manual and is contrary to your older way of thinking about oils. Or should I say old-fashioned way of thinking about oils. Try doing a little current reading about the 0w-30 viscocity versus 5w-30.
From: Mark A on 7 Oct 2007 23:21 "Built_Well" <built_well_toyota(a)hotmail.com> wrote in message news:470996ff$0$90409 > Try reading more carefully, Mark A. I did not say my Camry has > over 100,000 miles on it. It doesn't even have 9 k on it, so, > 0w-30 is an option, even though it's not in the manual and is > contrary to your older way of thinking about oils. Or should > I say old-fashioned way of thinking about oils. > > Try doing a little current reading about the 0w-30 viscocity versus > 5w-30. I never even remotely suggested that your car has 100K miles on it. I was merely mentioning when one should consider not using the manufacturer recommended viscosity, and if you deviate from the manufacturer recommendation because of engine wear, then you should only consider using higher viscosity, never a lower viscosity. I am familiar with the differences between 0W-30 and 5W-30. So is Toyota, which is why they recommended 5W-30 for your car. A little knowledge is a very dangerous thing, especially in your case when there are innocent people on the internet reading your posts and who think you know what you are talking about.
From: Built_Well on 7 Oct 2007 23:44 Mark A., again, your thinking is very old-fashioned when it comes to comparing 0w-30 to 5w-30. As I said, you should consider doing some current reading about the 2 viscocities. Dr. A. E. Haas, a Florida physician and surgeon who has researched fluid dynamics for decades, has written the following: "I know a person is confused when they say that a 0W-30 oil is too thin for their engine because the old manual says to use 10W-30. This is wrong. The greatest confusion is because of the way motor oils are labeled. It is an old system and is confusing to many people." Mark A., Doctor Haas, who has studied viscocity and fluid dynamics for decades, continues: "It is time to dispel the notion that 0W-30 oil is too thin when our manual calls for 10W-30. A 0W-30 is always the better choice, always. The 0W-30 is not thinner. It is the same thickness as the 10W-30 at operating temperatures. The difference is when you turn your engine off for the night. Both oils thicken over the evening and night. They both had a thickness, a viscosity of [about] 10 when you got home and turned your engine off. That was the perfect thickness for engine operation." "As cooling occurs and you wake up ready to go back to work the next day the oils have gotten too thick for your engine to lubricate properly. It is 75 F outside this morning. One oil thickened to a viscosity of say 90. The other thickened to a viscosity of 40. Both are too thick in the morning at startup. But 40 is better than 90. Your engine wants the oil to have a thickness of 10 to work properly. You are better off starting with the viscosity of 40 than the honey-like oil with a viscosity of 90." "I repeat: More confusion occurs because people think in terms of the oil thinning when it gets hot. They think this thinning with heat is the problem with motor oil. It would be more correct to think that oil thickens when it cools to room temperature and THIS is the problem. In fact this is the problem. This is the end of lesson number one." 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
From: Built_Well on 7 Oct 2007 23:52
[Please pardon a possible duplication of this message.] Mark A., again, your thinking is very old-fashioned when it comes to comparing 0w-30 to 5w-30. As I said, you should consider doing some current reading about the 2 viscocities. Dr. A. E. Haas, a Florida physician and surgeon who has researched fluid dynamics for decades, has written the following: "I know a person is confused when they say that a 0W-30 oil is too thin for their engine because the old manual says to use 10W-30. This is wrong. The greatest confusion is because of the way motor oils are labeled. It is an old system and is confusing to many people." Mark A., Doctor Haas, who has studied viscocity and fluid dynamics for decades, continues: "It is time to dispel the notion that 0W-30 oil is too thin when our manual calls for 10W-30. A 0W-30 is always the better choice, always. The 0W-30 is not thinner. It is the same thickness as the 10W-30 at operating temperatures. The difference is when you turn your engine off for the night. Both oils thicken over the evening and night. They both had a thickness, a viscosity of [about] 10 when you got home and turned your engine off. That was the perfect thickness for engine operation." "As cooling occurs and you wake up ready to go back to work the next day the oils have gotten too thick for your engine to lubricate properly. It is 75 F outside this morning. One oil thickened to a viscosity of say 90. The other thickened to a viscosity of 40. Both are too thick in the morning at startup. But 40 is better than 90. Your engine wants the oil to have a thickness of 10 to work properly. You are better off starting with the viscosity of 40 than the honey-like oil with a viscosity of 90." "I repeat: More confusion occurs because people think in terms of the oil thinning when it gets hot. They think this thinning with heat is the problem with motor oil. It would be more correct to think that oil thickens when it cools to room temperature and THIS is the problem. In fact this is the problem. This is the end of lesson number one." 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 |