I've used this engine oil in my car many times, and it has always performed to an excellent standard. It is of excellent quality, and will last easily for up to 10,000 kms as it is fully synthetic. You can actually feel the power and the performance this adds to your cars engine. Worth every dollar you pay for it.

I use HPR 5 and have been for about 8 years now. My 2010 Yamaha R6 has 130000ks on and found this oil has no drop off point especially with the clutch and gear changes. (See my photo below). I always wait till Repco (or other retailers) have a good special like 30% off then it becomes so cheap. Although Penrite have a dedicated motorcycle range, HPR 5 has been tested and proven in my bike so why would I change. I also use Penrite 5w-30 premium mineral in my RX-8 with good reliability so far. Give Penrite a try.

I own a JDM 2004 Honda Civic EP3 type R... This is the ONLY oil I'd choose. VTEC relies so heavily on oil, and this stuff has given me the best results! The engine actually sounds better, it's quieter. I've used other oils, but now I know I shouldn't have

Ive been using this oil since seeing an engine oil comparison test by one of the motor magazines years ago. I switched to Penrite after seeing the wear protection it gave on the these tests. it beat almost all the other oils in the test except for some very very expensive racing oils. Great results. I highly recommend it. I was previously a Mobil 1 and Shell Helix Ultra oil user. This Penrite range of oils is in our three cars and perfoms so well. I change the oil every 10,000kms and I'm sure it would go for longer. I'm just over cautious and have the time and $$ to do it. :)

Using the HPR5 5w/40 in the camry & it's a step up from the Gulf Western that was in it previously.
Kudos to the Penrite live chat people on their website,they are very helpful.
Bargain @ $36 from Supercheap when on sale for the 6 litre container
Next time i'll try the 10 tenths in the camry

This is for a Magna 6G74 engine on LPG. Very poor experience with this oil that I bought based on the certifications listed on the bottle. The used oil had high copper amounts. It makes me question the validity of those claims.

I have a 2004 Corolla that has covered 340,000km, with the original engine, never having been replaced or overhauled. I've used Penrite HPR 5 for the last 3 changes, of which- every 15,000km. The engine is quieter and uses less oil (virtually no oil) compared to the other "fully synthetic" oils I've used. Outstanding product.

Used HPR5 for over a decade in my old car and it never used a drop of oil between services and ran as good as new. While the formula has changed a bit over the years I now use HPR5 in my new car and again never uses a drop of oil between services and runs nicely. I love Penrite oils and would recommend it over anything else.

Used hpr 5 and loved my engine performance and mileage. Used Penrite engine flush as well when doing oil change. And you what oil is as clean on dipstick after 4000 kms as I have just changed oil now . Simply loved it . Was on special in supercheap bought 2 buckets of 10 litres for myself.

I'd been wasting my money on Mobil 1 as Mercedes recommend it. I dare say the recommendation comes from $$$ Mobil pay them to make the recommendation rather than the oil being superior to other top oils. I switched to HPR5 5W-40 which has the Mercedes 229.5 Approval. I can't fault it after using it for about a year now. I do 5,000km oil changes as I do lots of short trips and give the engine a fair bit of stick. The engine is silky smooth, makes no valvetrain noise and gets similar fuel economy to my previous oil. The bonus is it's half the price of Mobil 1 but the same quality. Love it.

I have been running Penrite 5W40 'Fully Synthetic' for over 6 year now in a 2009 Toyota Camry V6 & 4 years in a 2012 Ford Focus). Whether doing 'school runs' or holiday 'road trips', both cars run exceptionally well using this oil (winter/summer cold starts, smoothness, etc.) . Oil pressure is immediate on startup & oil consumption is minimal between services. A great 'value for money' fully synthetic engine oil..

Been using Penrite oil for years my wife's 2014 Ford Focus loves it but my BMW 323i is not so happy on HPR5 you can just tell its not perfect motor runs silent but feels sluggish of the mark. other then that i think its a great oil for everyday use my old Falcon loved it

I bought new sv6 commodore in 2010. While the car was under warranty it was serviced with shell helix ultra. The car used to burn approx 300ml every 7500 ks.
I now service the car myself with hpr 5 and it is great. Not a drop missing between services.
I also use hpr 10 for my wifes mazda and it is great. No top ups and very stable oil.

The only issue is that my commodore needs 6.7l per service so packaging size is a bit annoying as i have to get 2x 5l every second time.

Given how common commodores are 7l container would be great !!!