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what grade of synthetic oil for SR20DET??

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Old Oct 19, 2006 | 10:20 AM
  #21 (permalink)  
Matt Vassallo's Avatar
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Originally Posted by 170k240
synthetic ruins seal that arent pretty much brand new....

That's strange, I put synthetic into my ten year old engine, and i have absolutely no leaks.
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Old Oct 19, 2006 | 11:30 AM
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if u oil seals are leaky, its gonna leak no matter what oil, unless u switch to a thicker grade (which is a band-aid fix).

new seals are like what $50 or less?

synthetic cost more. gives u that nice yellow tint inside your engine. but its worth it to me.

i have heard once u go synth, dont go back to conventional though. i forgot the exact reason.

i run mobil1 10w-30 in my 150k KA, with oil changes about 2900-3200 miles (yeah sue me im lazy). its usually still pretty gold and doenst smell overly burnt or broken down.
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Old Oct 19, 2006 | 03:43 PM
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arent u supposed 2 change synthetic oil every 5k miles??
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Old Oct 19, 2006 | 04:20 PM
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they have types out now that can last u 5k and 7500miles, but i would never really recommend going more than 3000-3500 in a car that gets beat on and definitely no more than 3000 in a turbo charged car. pending your setup, and whether your turbo is oil cooled or not, it will break your oil down pretty well, just think how frothy and hot it gets being spun around in the turbo.

newer cars can run 4500 miles on oil changes and such if theyre daily drivers that don't experience alot of abuse. i still am sketchy on that but it seems to work. i'm not one to chance it on a junkyard sr motor or KA's that are 100k+ miles or 10 years or older (by now, every year 240 is 10 years old except the 2800 or so 1998 models roaming around).
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