I'm sure it'll be fine but will the extra $10 hurt you that much? Even the Wal-Mart Super Tech synthetic would be fine. I just think why switch between the 2 if it's really not necessary? I don't know if it's bad or not but it just doesn't make sense to change them.
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1998 Pontiac Grand Prix GT
WizAired CAI, Impala 12" Brake Upgrade, ZZP Alternator Rewire and Voltage Booster, Rotated Dogbone Mounts, Kicker KS690 6x9s, JBL GTO427 4s, JBL P652S 6.5s
2001 Ford F150 XLT SuperCab
Stock, LineX, 212K