First off, I understand Castrol Syntec is not a 'full' synthetic and Mobil 1 is; Point taken.
I also realize both are about the same price, so Castrol overcharges for their product; point taken.
Having said and understood that, I have searched the forum and I can't find any bad UOA's or any specific reasons as to why Castrol Syntec 5W30 isn't as good of an oil as Mobil 1 in daily use (for example a 5K or 7.5K mile oil change).
Can anyone provide any data or links as to Castrol not doing well in an engine in everyday use??
FYI, I am going to submit a UOA of Castrol Syntec 5W30 in our 2004 Lexus RX330 at the 5000 mile interval. It will be a few months down the road, but ..... Anyway, thanks for your help.
[ July 19, 2004, 11:31 AM: Message edited by: Curtis Newton ]
I also realize both are about the same price, so Castrol overcharges for their product; point taken.
Having said and understood that, I have searched the forum and I can't find any bad UOA's or any specific reasons as to why Castrol Syntec 5W30 isn't as good of an oil as Mobil 1 in daily use (for example a 5K or 7.5K mile oil change).
Can anyone provide any data or links as to Castrol not doing well in an engine in everyday use??
FYI, I am going to submit a UOA of Castrol Syntec 5W30 in our 2004 Lexus RX330 at the 5000 mile interval. It will be a few months down the road, but ..... Anyway, thanks for your help.
[ July 19, 2004, 11:31 AM: Message edited by: Curtis Newton ]