15w40 and 15w50

 Can you recommend a 5W-40 or even 15W-40 gas lubricant for a tropical climate state? Would 5W-40 be less viscous compared to 15W-40 diesel engine for cold begins in the morning? What is the consequences on the engine functionality and security? This may be put to use fleet at a tropical weather state with an average of 32-37 degrees C in midday and high humidity (60% ).  

Because there's not any winter, should I simply ignore the'W' worth and focus on the 40?"  Viscosity levels are primarily recommended in accordance with the expected ambient temperatures, especially the starting temperatures.

A mineral engine oil's working temperature doesn't change considerably even in different ambient temperatures, so the recommended viscosity is quite consistent for a variety of applications. The principal distinction is that the viscosity level"W,"

 WHAT IS 15W-50 USED FOR?

It has been recommended for vehicles that have high performance. Most used in sports cars, they are used to operate under heated and stressful conditions.

which relates to the starting temperature, since this will decide the lubricant viscosity, its own pumpability and willingness to lubricate the motor.

A 5W viscosity level requires the lubricant to flow properly at lower temperatures compared to, as an example, a 15W viscosity grade, so it is anticipated to be utilized at lower start temperatures. In tropical weather, most OEMs still advocate multi-grade goods, such as SAE 15W-40, since the lubricant flows quicker through the engine compared to a pristine SAE 40 even in higher ambient temperatures.

Another important factor when deciding on an engine optimization  is the high quality certificate or performance level. In the United States, this can be determined by the American Petroleum Institute (API). 

For diesel engines, the quality levels are distinguished by the letter"C" and another letter assigned according to the alphabet sequence, starting with"A" for the cheapest efficiency to"J" for its most recent and highest performance. In addition, for some programs you will find particular OEM performance requirements which are, in addition, a state of the engine's warranty.

On the other hand, you might use a 5W viscosity tier in which a 10W or 15W is suggested to provide quicker lubrication to engine parts through startup. 

However, there are some drawbacks to consider. For instance, because a milder base stock is employed in the 5W formula, the lubricant may have more evaporation than a 10W or 15W. The 5W might also cost more compared to 15W and divide more of the viscosity improver additives in the formulation.

PROBLEM OF REPLACING 15W40 OIL WITH 15W50 OIL

low Engine durability

Overheating 

Decrease in Oil Level 

and more 

You might also opt to utilize a synthetic lubricant with the identical viscosity and quality claims. In general, fully synthetic substances offer greater detergency and motor protection than conventional mineral oils.

If for any reason you don't have access to this specific quality and viscosity recommended by the OEM, 15W escapes well at ambient temperatures from tropical nations.The illustration below from SAE can be utilized as a general benchmark for viscosity choice according to ambient temperatures.