O.S. Engines 21VZ-B V-Spec - Manual (Page 26)

GUARANTEE
This engine is constructed from the very best
materials available and to the very highest
engineering standards, using the most advanced
precision machinery. However, the extremely high
stresses imposed by car racing operation under very
severe conditions, as well as stresses which are
exacerbated by the use of powerful fuels containing
very high concentrations of nitromethane, constitute
hazards which are beyond a manufacturer's control.
Accordingly, we regret that it is not possible to extend
our usual warranty terms to this particular engine -i.e.
no guarantee is offered against material wear, or
damage resulting therefrom, in actual use.
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