Ardeca Pro-Tec Ultra 15W4 *1 liter motorolie - Ardeca oil to win

label says fully-synthetic but website description says semi-synth. there's some BS going on

now you would think that "pro-tec" is their designation for mineral oil, and that "pro-tec ultra" their fully-synthetic but nope. they do have a protec ultra that's mineral their naming scheme is all screwed up

now looking at the price list the difference between mineral and FS is very small. you have to remember that "fully synthetic" is now just a marketing term. there's a big fuss about this many years ago... castrol i think claimed that a highly-refined group 3 oil is sufficiently "altered" to be considered a "fully synthetic".

so maybe these ardeca fully-synthetics are just stretching the definition of fully-synthetic a bit more

as for me i'll stick w/ my tried-and-tested mineral oils