Gothoma Diggings
Saved over R1,000,000 due to the doubling of overhaul intervals without damage.
Founded in 2001, Gothoma Diggings is one of the key diamond miners in the North West province of South Africa. Their off-highway
fleet consists mostly of Volvo A40D ADT Rockers that have a high
number of operating hours as the machines previously operated in
coal mines.
From Light Vehicles to Heavy Duty Equipment
Passenger vehicles and motorcycles or heavy-duty industrial equipment, Havoline and Delo customers worldwide rely on our lubricants to keep their vehicles at peak performance.


The start of the Gothoma Diggings business was also the start of their solid relationship with Delo® products. The challenge they faced was their need to find a reliable lubricant that could
i) provide the best engine protection possible,
ii) handle soot formation due to the nature of the business (multiple idle periods between load / unload services),
iii) deal with the extreme heat – which could cause the oil to thin – combined with increased amounts of dust, and
iv) provide a highly reliable oil analysis programme that allowed them to visualise engine oil performance.
i) provide the best engine protection possible,
ii) handle soot formation due to the nature of the business (multiple idle periods between load / unload services),
iii) deal with the extreme heat – which could cause the oil to thin – combined with increased amounts of dust, and
iv) provide a highly reliable oil analysis programme that allowed them to visualise engine oil performance.
With Delo® 400 Multigrade SAE 15W-40 and the right set of
servicing at 500 hours per machine, the engines’ lifespan increased.
The initial overhaul span proposed was between 16,000 and 20,000 hours. The actual performance of 28,000 – 30,000 hours with no overhauls resulted in savings of about R1,260,000 as the overhaul intervals were doubled.
The initial overhaul span proposed was between 16,000 and 20,000 hours. The actual performance of 28,000 – 30,000 hours with no overhauls resulted in savings of about R1,260,000 as the overhaul intervals were doubled.

A reconditioned engine is estimated at R630,000 apiece. We should have done two engines, but it’s still running with the same engine that has done 30,317 hours. We service at 500 hours. We use Delo® 400 Multigrade SAE 15W-40 in about anything that uses oil. We have a lot of confidence in this product and we can see the reliability each day. We never lost an engine while using Delo® 400 Multigrade SAE15W-40.
Pieter BotesSite Manager with 11 years of service within Gothoma Diggings
I have never gotten contaminated oil like I did with other engine lubricants at former companies I have worked for. I am comfortable with the reliability of Delo® 400 Multigrade SAE 15W-40.
Org Cloetemechanic
With such a loyal customer relying entirely on our products, we are very keen to introduce him to our innovative product, Delo® 400 MGX SAE 15W-40 for improved performance and benefits in both low- and high-sulphur environments.
James MentoCaltex Lubricants Technical Specialist
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