I know this doesn’t apply at every Toyota dealership but my local Toyota dealer in the Los Angeles area has been advertising through their monthly mailer Toyota 5W-30 for $2.90 per quart, no limit. It’s for conventional oil only, not synthetics and you need the coupon in the flyer. However, this has been running for several months and at the beginning you didn’t even need the coupon. Maybe this just a loss leader, I don’t know, but sometimes prices aren’t always what you expect from the dealer.