About
The Full Story
Cost Effective Maintenance NZ, previously known as Neptune Products, has been selling in the New Zealand market for over 25 years. Celebrated by our customers' reviews and satisfaction, Neptune Products built its excellent reputation by offering a 200% money-back guarantee policy, which has never been applied in almost three decades of operations, thanks to the quality and performance of our product range.
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Our Aftermarket Additives Specialization
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As specialists in aftermarket automotive additives, Cost Effective Maintenance NZ focuses exclusively on professional-grade solutions that extend vehicle life and reduce maintenance costs. Unlike general automotive retailers, we specialize in proven formulations designed to solve specific automotive problems - from engine sludge and fuel system contamination to cooling system failures and drivetrain wear. Our aftermarket expertise means we understand the unique challenges facing New Zealand vehicle owners, offering cost-effective alternatives to expensive repairs and component replacements.
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This rebranding (from Neptune Products) has come thanks to the new relationship forged with Cost Effective Maintenance, a well-established Australian company that has been providing innovative solutions to machinery maintenance challenges for over 30 years. Specialising in products that help reduce maintenance costs and issues, Cost Effective Maintenance has built strong relationships with private owners and small fleet operators, ensuring continuous feedback and collaboration to improve solutions.​
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Although operating independently, Cost Effective Maintenance NZ are committed to continuing this legacy of excellence, backed by Australian expertise and know-how to help drive improvements in machinery maintenance and fuel efficiency throughout New Zealand.Although operating independently, Cost Effective Maintenance NZ are committed to continuing this legacy of excellence, backed by Australian expertise and know-how to help drive improvements in machinery maintenance and fuel efficiency throughout New Zealand.
Services
Engine Treatment
Specialized solutions for engine sludge and carbon buildup
Preventive Care
Maintenance products that increase engine life and prevents costly repairs
Fuel System Solutions
Advanced additives that restores performance and increase fuel economy
Our Values
Quality Guaranteed
30+ years of customer satisfaction
Customer-Focused Solutions
Products developed through real customer feedback and testing
New Zealand Trusted
Focused on New Zealand and Australia driving conditions and vehicles
What our customers say
Allan, Australia
This company really knows their stuff. There products work extremely well which is a testament to the businesses longevity.
They could me more helpful if you need help with either advice or follow up.
Product is sent very promptly and is always what they claim it to be.
I can't commend the Cost Effective Maintenance staff highly enough on there knowledge, products, customer service or their professionalism.
Fraser, NZ
I’ve used these products from my 2-stroke chainsaw, to my 3 litre 4x4, to my big v-twin diesels in my pleasure launch. These products certainly do what is claimed and work better than anything else I’ve previously tried.