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<blockquote data-quote="mat3833" data-source="post: 8754506" data-attributes="member: 587645"><p>Yes, I run 0w40 in my jetta, I've got 280k miles on the original motor running 28-30 psi of boost daily. </p><p></p><p>oil pressure doesn't equal oil flow, and cold oil even the 0wt in my jetta does resist flow more than warm oil. You can block off the outlet of your oil pump and your oil pressure will be fantastic, but you have no oil circulation. The oil voscosity ratings on the bottle are measured at certain Temps, and most daily vehicles now use a 0w20 or 0w30 oil. Race engines usually run 20w50 or even a straight 50wt oil. Getting a little heat in your engine/oil isn't dumb, metals expand when they heat up and different metals expand at different rates. I personally don't go into boost until I've driven about a mile or so, if I wasn't so lazy I'd get an oil temp gauge to go with my others, but im not that anal about it. </p><p></p><p>My cold Rev comment was in regards to the jackasses in their squatted trucks starting their stone cold trucks and then revving them to redline repeatedly because it's "cool". Getting in your car and driving it normally isn't going to hurt a damn thing. But getting in your car and redlining every gear is certainly not good, especially if you have a journal bearing turbocharger with a tiny ass orifice for oil to circulate through like my jetta. Warming up your car is an old wives tale for the most part now, however it wasn't a wives tale back in the 60s and 70s.</p><p></p><p>Matt</p></blockquote><p></p>
[QUOTE="mat3833, post: 8754506, member: 587645"] Yes, I run 0w40 in my jetta, I've got 280k miles on the original motor running 28-30 psi of boost daily. oil pressure doesn't equal oil flow, and cold oil even the 0wt in my jetta does resist flow more than warm oil. You can block off the outlet of your oil pump and your oil pressure will be fantastic, but you have no oil circulation. The oil voscosity ratings on the bottle are measured at certain Temps, and most daily vehicles now use a 0w20 or 0w30 oil. Race engines usually run 20w50 or even a straight 50wt oil. Getting a little heat in your engine/oil isn't dumb, metals expand when they heat up and different metals expand at different rates. I personally don't go into boost until I've driven about a mile or so, if I wasn't so lazy I'd get an oil temp gauge to go with my others, but im not that anal about it. My cold Rev comment was in regards to the jackasses in their squatted trucks starting their stone cold trucks and then revving them to redline repeatedly because it's "cool". Getting in your car and driving it normally isn't going to hurt a damn thing. But getting in your car and redlining every gear is certainly not good, especially if you have a journal bearing turbocharger with a tiny ass orifice for oil to circulate through like my jetta. Warming up your car is an old wives tale for the most part now, however it wasn't a wives tale back in the 60s and 70s. Matt [/QUOTE]
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