A few weeks back the MIL got nailed by an uninsured driver. Money is tight for her, so we had to find a replacement vehicle on the cheap. Found a '92 Suburban with 250,000mi. on the clock for (very) cheap. Lots of miles but this thing purrs like a kitten and shifts surprisingly smooth, completely free of rust. Engine and trans was replaced at one point in its life, according to the PO, but of course no paperwork, so who knows.
So my question for any of you TBI owners out there is what oil to run? If there were no sales on full syn. I would lean toward running QSHM or SuperTech HM in this beast. But, my go to right now would be 5w or 10w30 Mobil1 HM based on the coupons and rebates available for it right now. Anything wrong with running Mobil1 HM oil in this old rig? I know the TBIs usually came with flat tappet lifters - is there another oil more suitable for that, or does it matter? I've owned several TBIs in the past but it's been years ago. It seems these do as well on conventional as anything, but these days just about everything is a syn blend, even conventionals.
Thanks in advance! - Here she is:
So my question for any of you TBI owners out there is what oil to run? If there were no sales on full syn. I would lean toward running QSHM or SuperTech HM in this beast. But, my go to right now would be 5w or 10w30 Mobil1 HM based on the coupons and rebates available for it right now. Anything wrong with running Mobil1 HM oil in this old rig? I know the TBIs usually came with flat tappet lifters - is there another oil more suitable for that, or does it matter? I've owned several TBIs in the past but it's been years ago. It seems these do as well on conventional as anything, but these days just about everything is a syn blend, even conventionals.
Thanks in advance! - Here she is:
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