I'm going to switch over to synthetic oil for the fleet. They've all been running on Chevron Delo 400. Since my 87 300D is making some lifter noises, i'm planning to do the switch for that car first.

Is there any "precautions/preparations" before the switch? Or is it just a straight drain the old and in with the new?

Thanks.

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Jason

00 Subaru Legacy (fun wagon)
96 Nissan Sentra (disavowed)
82 300SD (garage queen, will run again hopefully)
87 300DT (Gone: 10/15/2010)