can someone of substance(larry bible,benzmac,mike tangas et al...) tell me if reving in third at slower speeds is the same as full throttle in drive?does driving in third of a four speed tranny do more harm than good when you are trying to do an italian tune-up?no offense to anybody else meant, i just wanted to hear from some mech's or senior members with experience in engine work

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'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)