Since I'm a rep from Amsoil and I could get the oil fairly cheap compared to Mobil or the stealership prices, I decided to change my own oil. I called the dealership and they stated that my 2001 Porsche Boxster S requires 0W40 oil well Amsoil does not carry 0W40 oil and I asked the "Stealership" if going with 5W40 or 15W50 would be good enough, he refrained me from going any higher than what he quoted me. I live in Chicago, Illinois and honestly I dont drive my Porsche during the winter since I keep her in storage nice and covered to. Looking at the service manual they used 15W50 on the car but the car came from Florida (one owner) with very little miles
I called Amsoil directly and spoke to a tech he stated that I should be fine with high performance 10W40 or 5W30 or 5W40 european formula however the european standard did not offer high performance standards. Since I drive a Porsche and a BMW540 I wanted to buy a few cases of oil for my personal stock to use on both cars, now my 540 takes (regular oil) 15W40 but if I decide to go synthetic the service guy informed me to go with 5W30 so can I just use 5W30 on both cars and be happy or should I use something else that will fit my needs.
My Porsche is not stock, new performance exhaust, intake, headers and software upgrades, oh and nice 19 inch wheels!
Lastly, I want to change the stock plugs to Denso Iridiums. Any thoughts on this or has anyone used the plugs on their modified S???
Sorry for the long thread just wanted to explain my little issue. Thanks to all in advance!
Robert