Nulon Pro-Strength Heavy Duty Diesel Engine Treatment has been developed to increase performance and protect against engine wear and heat in diesel engines. 4X4, heavy haulage and long-distance driving can place extreme stresses and loads on low revving and high torque diesel engines. Nulon Pro-Strength Heavy Duty Diesel Engine Treatment with Polytetrafluoroethylene (PTFE) significantly reduces friction, heat and wear, prolonging engine life and maximising performance. Designed to suit all turbo and non-turbo diesel engines.
Nulon Pro-Strength Heavy Duty Diesel Engine Treatment has been developed to increase performance and protect against engine wear and heat in diesel engines. 4X4, heavy haulage and long-distance driving can place extreme stresses and loads on low revving and high torque diesel engines. Nulon Pro-Strength Heavy Duty Diesel Engine Treatment with Polytetrafluoroethylene (PTFE) significantly reduces friction, heat and wear, prolonging engine life and maximising performance. Designed to suit all turbo and non-turbo diesel engines.
Nulon Pro-Strength Diesel Heavy Duty Engine Treatment 500ml HDDET
Nulon Pro-Strength Heavy Duty Diesel Engine Treatment has been developed to increase performance and protect against engine wear and heat in diesel engines. 4X4, heavy haulage and long-distance driving can place extreme stresses and loads on low revving and high torque diesel engines. Nulon Pro-Strength Heavy Duty Diesel Engine Treatment with Polytetrafluoroethylene (PTFE) significantly reduces friction, heat and wear, prolonging engine life and maximising performance. Designed to suit all turbo and non-turbo diesel engines.
Nulon Pro-Strength Heavy Duty Diesel Engine Treatment has been developed to increase performance and protect against engine wear and heat in diesel engines. 4X4, heavy haulage and long-distance driving can place extreme stresses and loads on low revving and high torque diesel engines. Nulon Pro-Strength Heavy Duty Diesel Engine Treatment with Polytetrafluoroethylene (PTFE) significantly reduces friction, heat and wear, prolonging engine life and maximising performance. Designed to suit all turbo and non-turbo diesel engines.
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The lowest price for Nulon Pro-Strength Diesel Heavy Duty Engine Treatment 500ml HDDET right now is $22.20 at thedieseldraustralia.com.au, compared across 22 retailers.
The all-time low was $9.80 on 7 July 2025 — today's price is 127% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 14 Sept 2026.
Last updated at 14/09/2026 03:48:00
500ML Pro-Strength Heavy Duty Diesel Engine Treatment (HDDET)
Delivery $35
Nulon Pro-Strength Heavy Duty Diesel Engine Treatment 500ml - HDDET
Free 60-day returns
VPW - NULON 500ml Pro-Strength Diesel Hd Engine Treatment, Each
Delivery between Wed – Thu $34.35
Nulon Pro-strength Heavy Duty Diesel Engine Treatment 500ml - Hddet
Delivery $5
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Ps Diesel Hd Engine Treatment 500ml Hddet
Delivery $6.95
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Universal Diesel Heavy Duty Engine Treatment With PTFE 500ml | Nulon Pro-Strength | HDDET
Free delivery
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Nulon Ps Diesel Hd Eng Treatment 500ml 2 Pack | Hddet
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Pro-strength Heavy Duty Diesel Engine Treatment Ptfe 500ml Hddet
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Pro-strength Diesel Engine Treatment With Ptfe 500ml 6 Pack Bulk
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Ps Diesel Hd Eng Treatment 500ml
Free delivery
originally posted on supercheapauto.com.au
No difference on oil temperature, engine noise, fuel consumption observed after 3000km of travel
originally posted on supercheapauto.com.au
Have found the diesel engine treatment assists in quietening the engine whilst towing the caravan.
originally posted on supercheapauto.com.au
Good stuff, lowers smoke emissions, odds a little more compression in yr worn motor. It certainly made an improvement to my old motor.
| Capacity | 0.500 |
500ML Pro-Strength Heavy Duty Diesel Engine Treatment (HDDET)
Delivery $35
Nulon Pro-Strength Heavy Duty Diesel Engine Treatment 500ml - HDDET
Free 60-day returns
VPW - NULON 500ml Pro-Strength Diesel Hd Engine Treatment, Each
Delivery between Wed – Thu $34.35
Nulon Pro-strength Heavy Duty Diesel Engine Treatment 500ml - Hddet
Delivery $5
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Ps Diesel Hd Engine Treatment 500ml Hddet
Delivery $6.95
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
No difference on oil temperature, engine noise, fuel consumption observed after 3000km of travel
Have found the diesel engine treatment assists in quietening the engine whilst towing the caravan.
Good stuff, lowers smoke emissions, odds a little more compression in yr worn motor. It certainly made an improvement to my old motor.
Brought the old ute brand new over 12-years ago has more than 300,000 kms and almost as good as the first day it was driven. It's done a lot of towing and country driving but I have been using Nulon products since the early 1980's. Engine of ute has been protected by Nulon diesel engine protection since about 90,000.
The engine runs quieter and smoother. The tappet noise is gone and there is much, much lesser smoke on hard acceleration. Highly recommended!
I have been using the Nulon Diesel engine treatment in my turbo diesel 4 x 4's for the past 2 years and i have noticed a remarkable difference in engine performance. The treatment seems to reduce the temperature and has a noise lowering affect on the diesel engines. I have never before recommended any product before but congratulations to Nulon. "Well done"!
Nulon oil additives is a product I always use at every oil change. I have never had lower engine problems, in any vehicle since about 1965
I put this in my engine with every service. It definitely helps reduce engine noise and rattle and reduces engine ware
Use this before doing my long drives. The engine absolutely runs smoother & my fuel consumption indicates this. Between Grafton to Wollongong (700km) my MINI 2018 Countryman All4 automatic uses 4.2 l/100Km. Vastly better than prior to using it 4.9 - 5.2 for the same trip.
i have a bmw 320d tdi. serviced the car with penrite 5w40. But as soon as i added this Nulon HD Diesel it has made the car a lot quiter and much much smoother driving on highway. incredible. will continue to use every oil change
| Capacity | 0.500 |
