Quote:
Originally Posted by jwko
Thats a good question. I don't see how an engine could properly "break in" using synthetic oil. Synthetic is supposed to eliminate engine wear, to break in an engine means slight engine wear. I would use conventional motor oil to about 10k to allow the engine to fully break in. Then switch to a true synthetic oil like Mobile 1.
You might want to research brands. There are a lot of oil's claiming "full synthetic" but are actually petroleum based. Amsoil and Mobile 1 are true synthetic.
Stay away from Fram oil filters, they are junk.
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Thank you. You are correct on the use of mineral oil during the break in period. I emailed Toyota and the actually emailed me back and confirmed that the car is factory filled with mineral oil, not synthetic but said it was "acceptable" to use synthetic oil after 5,000 miles - but once you switch, don't go back to mineral oil. Since I only drive about 4000 miles in 6 months, I plan to use regular Pennzoil 5W-30 for the first two oil changes. As to fram filters, I know they are junk and plan to use only genuine Toyota oil filters and have the service performed at the dealer in order to keep the warranty in tact.
