synthetic oil and scratching sound

baddabing80

Registered User
Hey guys im having a couple of problems. First problem is I just changed over to Mobil 1 synthetic oil and a few days later im low on oil but I dont see it leaking anywhere but the dipstick wasnt even showing a drop.Im not sure if this is because of the change of oil or what. Also when ever I kick it down in 2nd or 3rd I here this scratching sound for a second kinda like grinding but not that intense, it shift find and stays in gear just that wierd sound. Also I have aftermarket oil pres guage and I was wondering if the oil pres should be down to 20 psi at idle and up to 65 psi while driving.
 
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