This is totally untrue, there have been absolutely no calls about fried motors The reason for the packets being 1.8 oz is because the packets are also sold in the Canadian and Australian market which use metric measures. Mix instruction on the packet is with 5 litres or 1 gallon of gas. 5 litres gives 100 to 1 ratio 1 gallon gives 72 to 1 ratio which still gives all the benefits. Paul at Interlube does not recommend mixing Opti-2 at a lower ratio than 72:1!!!! I just talked to Paul for 50 minutes so there is no need for you guys to call. LOL Paul says that a 32 to 1 ratio will dirty up your motor and reduce your performance. Opti-2 oil has a pure base and does not use solvents like other oils so it is really like a 50 to 1 from other oil makers. Opti-2 is a semi synthetic blend and ideally should be used from day one on a new motor to get the full benefit. Opti-2 also uses non alcohol based fuel stabilizer in the blend.