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Just bought a 92 745T w/ 165K. Car was a one owner and pretty well cared for. Oil was changed every 3-4000 miles - but always with dino oil.
I changed oil in it the first time Saturday, and used Valvoline Durablend (1/2 & 1/2). I am hoping that this will prepare the seals for full Mobil syn - 10W30, and they will not leak. All is dry as a bone now.
I was also thinking of the possibility of something like Marvel Mystery Oil for a spell to help the seals ???
Am I headed down the right path ? How long might I stay with the Durablend (or something else) before I make the jump?
All input welcome..
Andrew in AL
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