Uses on your VR4 include:-
Oil Sump Pan Sealant, Waterpump, Oil Pump to name a few.
See HERE

• Red cold vuIcanising silicone rubber, permanently elastic siIicone sealing compound for engine and body.
• For sealing of surfaces, gaps and cracks on water pumps, oiI sumps radiators, crank cases etc.
• Temperature resistant from -50° C up to 250° C, short term up to 300° C.
• Cold vulcanizing silicone rubber for protection of surfaces and cracks.
• Bridges over large uneven surfaces and seals reliably even after years of vibration.
• Does not drip, sag or become stringy.
• Film forms after a few minutes.
• Duration of vulcanization approx 1.5mm/day.

Material Safety Data Sheet - MSDS HERE