|
There are two VW 1.8T's. The one in the Passat is the Audi 1.8T which has 170 horsepowers and a capacity of 4.2 quarts. The other 1.8t (found in Jettas, GTI's and the other VW's) has 180 hp and a capacity of 4.6. The guy that had Amsoil analyzed has the Passat 1.8 (4.2 quarts). The guy that had the Mobil analyzed has a Jetta (4.6 quarts). That could explain why the Mobil 1 performed better. But also keep in mind that the Passat 1.8T is a lower output engine (170 hp instead of 180). Moreover, the guy running the Mobil 1 also has a modified engine so he boosted up from 180 hp to 225 hp or so. I would assume that the more demanding engine would be harder on the oil. Is it enough to offset the .4 difference is oil capacity? I'm not sure.
|