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Old 03-28-2014, 09:13 AM   #6
jb92563
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Join Date: Apr 2012
Location: Riverside, CA
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Quote:
Originally Posted by Trey T View Post
I'm switching to all full-synthetic on all my cars and use either Castrol or M1. For the boxster I either use M1 0w40 or Castrol 5w40 to change out every ~6 months or ~6K miles. Finding those oil on sale has been easy.
Just one caveat, when switching between non-synthetic and full synthetic I have read that some seals may start to leak due to the different properties between the two.

I would check your other car forums to see whether that's a wise idea or not.

I was going to put Synthetic into my Jeep Wrangler as well but heard of possible leaking after the switch and decided against it for now.

Just something to consider...
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