About our business
Specialists in Automotive Additives for NZ
A bit about us! Cost Effective Maintenance NZ, previously known as Neptune Products, has been selling in the New Zealand market for over 25 years. Our customers celebrate us through their reviews and satisfaction. In fact, Neptune Products built its excellent reputation by offering a 200% money-back guarantee policy. This guarantee has never been applied in almost three decades of operations. This is thanks to the quality and performance of our product range.
Our Aftermarket Automotive Additives Specialisation
As specialists in aftermarket automotive and machinery additives, Cost Effective Maintenance NZ focuses exclusively on professional-grade solutions. These solutions extend vehicle and machinery life and reduce maintenance costs.
These formulations are designed to solve specific automotive problems. For example, we address engine sludge, fuel system contamination, and exhaust emissions. Additionally, we tackle cooling system failures, drivetrain wear, and hydraulic gear wear.
Our aftermarket expertise means we understand the unique challenges facing New Zealand vehicle and machinery owners. Therefore, we offer cost-effective alternatives to expensive repairs and component replacements.
Our Partnership with Cost Effective Maintenance Australia
This rebranding (from Neptune Products) has come thanks to our new relationship with Cost Effective Maintenance Australia. They are a well-established company that has been providing innovative solutions to vehicle and machinery maintenance challenges for over 30 years.
Moreover, they specialize in products that help reduce maintenance costs and performance issues. Cost Effective Maintenance has built strong relationships with private owners, small fleet operators, and large mining companies. As a result, they ensure continuous feedback and collaboration to improve solutions.
Our Commitment to Excellence
Although operating independently, Cost Effective Maintenance NZ is committed to continuing this legacy of excellence. Furthermore, we are backed by Australian expertise and know-how. This helps us drive improvements in vehicle and machinery maintenance and fuel efficiency throughout New Zealand.
What we focus on
Our key areas of expertise
Quality products
Premium diesel additives tested for NZ conditions
Preventive Care
Maintenance products that increase engine life and prevents costly repairs
Engine Treatment
Specialized solutions for engine sludge and carbon buildup
Expert support
Knowledgeable advice to help you choose the right solution
Our Values
The principles that guide everything we do
Quality First
We never compromise on quality. Every product is tested to ensure it meets our high standards.
Customer Trust
Building lasting relationships through transparency, reliability, and exceptional service.
New Zealand Focused
We focus on New Zealand weather and driving conditions to give you the best recommendations
What our customers say
Trusted by customers across New Zealand
This product has made a real difference to my diesel engine's performance. Highly recommend!
Great service and fast delivery. The diesel additive works exactly as described.
Excellent product for NZ conditions. My truck runs smoother and more efficiently now.