Lexus Oil Change

[reyoasian]

Hi, I have a 2009 Lexus IS250 AWD (I'm located in Canada)

I just have a few quick questions about oil change before I call Lexus. I am planning to buy my own oil and filter and take it to Lexus for oil change because maintenance is too expensive.

1) I've been told that Mobil 1 engine oil is the best on the market so just wondering if anyone has experience with it, and if you do, which 1 of these is better:

http://www.canadiantire.ca/AST/browse/4/Auto/3/AutoFluidsChemicals/EngineOils/PRD~0289420P/Mobil%252B1%252BSynthetic%252BMotor%252BOil%25252C%252B1L.jsp?locale=en

http://www.canadiantire.ca/AST/browse/4/Auto/3/AutoFluidsChemicals/EngineOils/PRD~0289431P/Mobil%252B1%252BExtended%252BPerformance%252BMotor%252BOil.jsp?locale=en

apparently, the extended performance synthetic one lasts 20,000 KM...what about the normal synthetic one?

2) I know that 5W30 is the one to use, but how many Liters/Quarts should do I need?

3) I've also heard K&N is the best filter on the market, is this the right filter and how many KM does it last:

http://www.canadiantire.ca/AST/browse/4/Auto/AutoCustomPerformance/KNPerformance/PRD~0340200P/K%252B%252526%252BN%252BOil%252BFilter.jsp?locale=en

Thanks in advance!

[bartkat]

http://us.lexusownersclub.com/forums/index.php?showtopic=42887

[glissman]

Change oil more frequently. Forget the 20,000 promises, change at 5000. Do this and any name brand filter is OK