I got a new 2020 Corolla Hybrid. Factory instructions say to change the oil every 10k. After doing some reading online, I figured I'd take it in after the first 5k just because the engine is breaking in. I called some places today, and discovered how expensive an oil change with synthetic oil is. I was was all happy to just do it when it was regular oil, but given the fact the oil change will cost me 80-90, I now only want to do it if it's really necessary. Thoughts on this?