Kirkland signature synthetic oil

Never been a fan of Quaker State or Pennzoil. Probably because, of all the **** that happened way back when, but now if you look, at the oil test results, for Kirkland and Quaker State, Kirkland has better specs?
Have all of it in the garage. I'd say the QS and Kirkland are pretty similar. Kirkland more affordable.
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The QS is 5w30 and I have both the 0w-20 and 5w30 Kirkland specs clipped.
 
Never been a fan of Quaker State or Pennzoil. Probably because, of all the **** that happened way back when, but now if you look, at the oil test results, for Kirkland and Quaker State, Kirkland has better specs?
They're comparable in many respects; both are D1G2-rated.

Historically, both full-synthetic Kirkland Signature and QSUD (including its newer QSFS moniker) are highly regarded oils here.

Both oil brands are favorites in my Alaskan vehicles.
 
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