Mark_888
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I am not sure where you got that information, but it is completely false.Also, the OP has LOW mileage...... the Pennzoil Ultra is for "higher" mileage cars if you know how to read a chart........
In the USA, synthetic oil is allowed to contain three ingredients in their base stock and still be called synthetic:
- Group III - Hydrocracked (highly refined) Mineral oil
- Group IV - PAO
- Group V - Esters
Pennzoil Platinum is a 100% (except for additive package) Group III synthetic, along with Castrol Syntec (USA version), and many other synthetics sold in the US.
Mobil 1, Pennzoil Ultra, Castrol Edge, and others are a blend of Group III and true synthetics (Group IV and/or V) in the USA. These same companies sell synthetic oil in the EU which are 100% Group IV and/or V base stocks if they are called synthetic (a legal requirement in the EU). Not sure if Pennzoil brand is actually sold in the EU, but their parent company Royal Dutch Shell sells Shell products under the Shell name there.
So Pennzoil Ultra is just a better quality blend of synthetic base stocks than their Platinum oil, and there is no reason why Ultra should not be used on a brand new low mileage engine. Some companies do specifically market high-mileage oils (both conventional, synthetic blend, or synthetic) that have certain additives in them to help to deal with excess engine wear or other similar problems (including oil consumption), but regular Pennzoil Ultra is not such an oil. However, if one did have a high mileage engine with oil consumption problems, then Ultra (especially a high viscosity version) might be better than Platinum for such situations, even though it is not restricted for use to high mileage engines.