Anyone Have Oil Leaks? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-01-2007, 12:08 AM   #11
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52K not a drop, Either Mobil 1 or regular Valvoline, depending on my mood or what I have in stock. If I go Mobil 1, it'* 10W-30 as that'* what I keep stocked up on for the GTO to help quiet down it'* valvetrain and keep it from triggering the knock sensors with false knock. I also add Lucas Synthetic stabilizer. If I go Valvoline, just regular oil Lucas stabilizer.

I change mine in all my vehicles every 2,500 miles (even the GTO and Bonne with M1). I don't give a rip what anyone says, what manufacturer'* say is "ok", or the boastful claims of oil manufacturer'*. I spent way to many years working in service seeing engines that were grenaded because the owner neglected to change their oil based on those above mentioned claims. I firmly believe in the "Spend a little now, or a lot later" theory, and since I keep most of my vehicles well past 100k, I'll spend the money.

In spring/summer, I typically go with a 10W for the added protection against thermal breakdown in the higher temps, in fall/winter, I typically go with a 5W (except the GTO), to aide in quicker pumping when it'* cooler, as oil thickens up as it gets colder out.
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