Sup everyone, I got a 03 wrx..I am deciding to go sythetic oil..just wondering whats everyones favorite oil..my eng got about 140k..anthing helps? thanks
I use castrol. it works perfectly fine... but I just use it because the guy who had the rex before me used it.Uh..I have never heard that myth? I just got all th seals and both gaskets replaced on my block so not sure where the leak would follow<...I would rather go full synth..lol.......How about Castrol anyone?
I tend to find this as fact. Convential oils have different solvent properties which coat gaskets and seals. Over time; e.g. mileage, it's not an issue. Same oil, brand, weight etc..... Now, a switch to synthetic oil could affect these seals / gaskets with its additives.i've heard the thinner properties of synthetic oil tends to find leaks with higher mileage cars. is this a myth? anyone used/considered the semi synthetic high mileage oils?