Originally Posted by
weltall
what oil are you using? im going to guess and say 5w20
here is the thing the greddy banjo fitting works fine, however..... since the oil return is under the oil level the system now needs to rely on oil pressure to pump it back into the pan (like blowing bubbles into a milkshake) the thing with 5w20 is it gets as thin as water when heated up (especially inside a turbo at idle where the car doesnt supply enough pressure) this thinner oil will work around bushing stlye seals in a normal turbo with extraordinary ease then it burns the charring pushes more on the seal untill well you know
10w30 is MUCH less likely to get around the normal wear and tear on turbo seals (your turbo will die before it get through)
if i remember correctly the greddy instructions i had back in 04 said to use 10w30
i used 10w30 on my greddy kit for years then again on my fullrace setup and never had turbo issues (i did have a gt35r die on the dyno but that was a defect from garrett where the weep hol on the oil fitting internal to the turbo was blocked off by casting flash)
weltall vanish
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