Automobile Engineering in ME
The crankcase dilution means

Dilution of mixture passing through crankcase in two stroke engines
Dilution of oil by water in the crankcase
Dilution of lubrication oil by fuel in the crankcase D. Dilution
Dilution of fuel in the crankcase

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Automobile Engineering in ME
The main feature of Macpherson strut suspension is that

Non vertical external forces are supported by the suspension arms
The unsprung mass in lighter
The vertical size of the suspension can be made more compact
The assembly is slightly more complicated in design

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