Engine Overview and Common Failures
The weight of the VQ37VHR engine according to the catalog is 210 kg. The engine number is located at the junction of the block and the gearbox.
The main complaints on forums are related to oil consumption, and there are several reasons for this. Firstly, it is natural wear and tear of the unit due to excessively aggressive operation. Secondly, the catalysts here are sensitive to poor fuel and deteriorate quite quickly, with their particles being sucked into the combustion chambers, where they scratch the walls and cause scoring.
Another well-known problem is the gaskets of the oil channels under the front cover. Until 2012, they were made of paper, which often got squeezed out by 100,000 km. All of this can lead to leaks, a drop in lubrication pressure in the unit, and bearing spin.
During active driving, this engine heats up significantly, so it's important to monitor the cooling system. Not only periodically clean the radiators, but also replace the expansion tank cap. There are no hydraulic compensators here, so don't forget about adjusting the valve clearances.