Best Engine Oils

Not great with E85 – Doesnt seem to last long for the money spent . When fresh was a good oil, after a few kms engine noises popped up after engine was warm. Went back to penrite back to normal. Changing oil in the same intervals. Show details

Used penrite hpr30 for years in my 1990s corolla. A few months ago I bought a bottle of the new formula oil. Noticed the bottle was different with a… Read more

different lid and also a new foil deal under the cap. When I broke the seal I noticed that the oil didn't have the usual smell. Did the oil change and immediately noticed that the engine wasn't revving as freely. Checked the dipstick and noticed that the oil was very sticky which seemed odd. Found out later from shop I bought it from that penrite hpr30 has a new formula for high mileage engines. Seems to me like it's just full of cheap butt stop-smoke now. Hilariously it used more oil than the previous old formula oil. Was considering dropping penrite altogether but found 15/50 penrite synthetic on special so gave it a try. Surprisingly very happy, engine not burning a drop of oil now.

I highly recommend this oil! – I bought my 2005 corolla wagon in 2009 when it was 4 years old and done 117,000 km. I've used Castrol Magnatec 10W40 in my car the whole time and… Read more

it's now 2022 and the car has done 345,000 but still runs as good as the day I got it! It has had no loss of power and it's fuel economy is still as good as ever! I religiously change my oil every 3 months or 5,000km as it states on the bottle, I also change the oil filter at the same time. I can use the more expensive Castrol Edge 5W30 and leave it oil changes for every 10,000kms but I still prefer to use the cheaper Magnatec and change the oil more often as I feel it is better for the car.

The Best Since Day 1 – I started using Mobile 1 as soon as it first came out in the U.S. I used it in a whole series of Volkswagen Beetles I owned - 57,60,65,67 and 68, all… Read more

driven hard long miles. Air-cooled not so easy on an engine but these all survived without a hitch and no oil burning - just time to sell them with the other car components worn out. On to a 1967 Ford F-100, 240 C.I. long stroke with NP truck transmission - drove it like a diesel through mud, rocks and amazing hill climbs on Mobile 1 with no oil burning and perfect performance. When living in Canada I drove a 2014 Ford Explorer for 290,000 miles, sometimes many days at -40 degrees without a hitch on Mobile 1, even without plugging in the engine heater. Mobile 1 - always been the best!

Motor mechanic and suspension engineer – The engine oil you can trust owned by British petroleum When I got my vx commodore. The owner manual required 10w 30, I looked up castrol… Read more

recommended was magautac 15w 40w and thought maybe mistake and rang castrol and it was correct the. Car ran fine on it. So repco had castrol edge on special for $ 40 a bottle and it made big change in fuel users and was 650..km around town. And 850 km on. Open road and very happy with d products . I have been use from XL , GTX to edge. So there was some bad stories of GTX in 80s. The car dealer were charging the oil at 1500km at make money at when the had run in oil to bed the rings in. So most were use castrol XL as not friction modified oil . So changing oil at 1500 cases the bore of to glaze there bore and use oil because needed friction to brake the motor in right. It was Japanese cars, as manuals told you not sitting on one speed at all times . They were days you had run in, some still do for new types of auto transmission castrol is company that doesn't say one oil sures all as some do. That why most oils don't put friction modified on labels. So read you hand book on year new car or second hand car for right oil specific. As a lot motor are full alloy and not checking oil and coolants weekly, could cost your good bye motor As it happens in 60s with one USA biggest manufacturer and sold to ròver England and serviced for over 40 years. Don't take the risk, the same as your tyres weekly pressure's. I pcl brand gauge made in England, but I don't know if still buy in Australia or who imports them. As we used them for over 25 year with no problems. I got all my family and friends pen type for gifts over 10 years ago pep parts.

They do not know how their products affect the vehicle – Firstly the products are poorly labelled. Their website recommended Multi-vehicle fluid for my car. It did not highlight that there are 3 different… Read more

types and these types are not prominent on the label.

After using the wrong oil, I contacted Penrite to find out the differences and how these differences impacted my transmission. It is very worrying that they did not know the differences or the effect of various components in the oil. I friend told me that Penrite simply purchase other brands of oil and simply duplicate it without knowing what the various components do. I do not know whether this is true or not. However, their responses to simple questions raise questions

Penrite technical customer service is apalling – I have been a faithful Penrite customer for years and have always found their technical support to be beyond excellent in the past. For example,… Read more

viscosity at real-world temperatures that actually matter (like an Australian Winter cold start at freezing point) is far more relevant to me than the published figures on their website of - 30 degrees centigrade and 40 degrees centigrade (the former never relevant and the latter temperature too high for the first critical moments during a Winter cold start). So previously, Penrite were more than happy to provide these extra figures (which in turn caused me to change from one of their 0W products to a 5W one as the 5W flowed better at freezing point than the 0W one did). But apparently not so nowadays. A recent query of mine asking the same question for the Ten Tenths 0W-20 oil and several other Penrite oils for comparison, the response received was: "No, this info is not determined.Cheers Penrite Tech Support". And it was CC'd to "All Penrite Tech".

Well if asking such a simple question is too difficult for Penrite then I will go elsewhere. There are plenty of good oil companies around these days but what used to make Penrite stand out in my experience was the whole Australian thing and their previously great customer service. But after a reply like that, CC'd to (apparently) all of their tech people (what, so they can have a laugh at the expense of their customers or something??), then I will be spending my hard earned money elsewhere.

Other oil companies are very transparent and detailed in their technical enquiries and Penrite used to be as well. Not any more apparently if my experience was typical.

Very Good DCT fluid for Ford – I bought this for my 2015 Ford Kuga TDCi transmission fluid change scheduled for the 60k km interval. Leading up to this transmission oil service,… Read more

the operation was getting a little rough. Replacing the fluid with the Penrite DCT made it smooth again. I have done 20k kms since the DCT oil change and the transmission is faultless. My honest opinion is that Any car with Dual Clutch should have their oil replaced at 45k kms, which is 1 service sooner if it is driven a lot in traffic. At 60k, the oil was solid black (not even a little bit see through), hence why I suppose my shifts were getting rough at around 55k kms.

My conclusion is that Penrite DCT was value for money and well suited for my car.

Excellent motor oil – I use Valvoline Engine Armour motor oil regularly, and I find it to be excellent - engine runs smooth, quiet at start up, and stays in-spec for a… Read more

long time.

Use the 10w-30 in a Corolla, and 15w-40 in an older Commodore. Both are high quality products. Better than the Magnatec I used to use.

10w-30 is also the cheapest GF-5 economy spec motor oil around.

couldn't open the bottle. in the bush and wanted to refill the oil in the car. zero for me!! and shell helix..... Show details

I have a BMW 330D with 300,000ksm, I’ve been using Penrite C3 since I owned the car from 110k and the engine is pristine clean, runs like new and drivers perfectly.

Great oil – I have been using GW oil for over 4 years now in my 2007 honda accord. I have never had any issues with it at all. Its a great local product and good price too. Just make sure u change the engine oil regularly.  Show details

I will not buy Gulf Western ever again due to misleading advertising! I bought synx 3000 as it said synthetic on bottle. This means its NOT full… Read more

synthetic but a blend. All other companies say semi-synthetic. I left my oul changes too long trusting it was synthetic and am now paying price!

So much love for this oil & its cleaning results are the quickest I have ever seen. I run the VE Holden Commodore SIDI V6 LLT engine & the other 6's… Read more

in the line up are known as sludge machines, so this was the perfect candidate to use this oil & find out what truely happens. So the service was done on September 20th. So far to date, the engine has been running on this oil for 9,020kms. First service was done at 8,020kms & in this time, oil filters were changed at 1,000, 2,500 & 5,000kms. The oil was getting darker from the get go but the engine was also picking up smoothness, quietness & responsiveness which was fantastic. First pic is filter after 1,000kms, second is the thick black gunk from the filter, third is filter at 2,500kms, fourth is oil filter housing at 5,000kms (nasty) & fifth is putting through 15 micron filter bag & sixth is through a 0.5 micron filter bag. If you go down this path, awesome, but be smart in the process. Change/drain oil at 7,500kms or 10,000kms or somewhere in between. Do not waste your time, your money & the oils high cleaning abilities by changing it way way too quick like many others do & change after 500kms or 1,000kms, its just pointless & st^pid! You gain nothing by doing this. By all means, change the filters but leave the oil. Give the engine some high speed & high heat driving & the oil will get to work on the cleaning efficiency. Every engine benefits from this oil, all V engines, straight/inline engines as well as the Subaru horizontal engines.

Awful company to deal with – We were dealers for gulf western oils and spent thousands in advertising for them. The owner of gulf western got us mixed up in their price fixing… Read more

which we wouldn't be a part of, so he took away our dealer prices (after a rude call from him), and left us out of pocket thousands of dollars. They are an extremely shady company and one to avoid. We consequently made a formal complaint to the ACCC which we kept here on file.

From a dealers perspective, avoid this outfit like the plague. As for the quality of the oil, go to Woolies and try some for yourself.

Penrite 2T Fully Synthetic 2 Stroke Oil – Whilst my bike is only a 49cc 2 stroke minibike, I wanted maximum performance and efficiency out of it, as it was a fixxer upper/restoration job.… Read more

Bike had been sitting unused for quite a while from previous owner. With a fuel tank flush, new fuel and Penrite Fully Synthetic 2T, it now runs clean, idles smooth and starts first time. That's why I choose a fully synthetic oil, and that's why I chose Penrite. Australian and used in top tiers of motorsport in Australia, from V8 Supercars to motorcross/supercross.

Penrite Small Engine 4 Stroke Oil – Something often overlooked.....lawn mower servicing. The old faithful Honda lawn mower has been used and abused over the years and it was time to… Read more

give it some love. The old engine oil was well and truly past its best. I replaced the spark plug and the old oil with Penrite Small Engine 4 Stroke Oil, 600ml later the mower was purring like a kitten. Supporting Aussie companies when I can.

A great lubricant additive for manual gearboxes with issues - or just as a preventer – I have a 1994 Honda Prelude VTIR. This vehicle is known as one that can have trouble with shifting - especially from 4th - 5th, but at other shifts… Read more

too. Mine actually felt very "notchy" and sometimes not pleasant to drive.

I sought out a lubricant to make it smoother - and this is where Nulon really came into its own. You add the entire contents of the Nulon tube and then fill to the specified level with the regular transmission oil, in this case, I used Penrite Trans Gear 75W - 80.

It wasn't an immediate fix, but over the next 100 km or so, shifting became much smoother - to the point where most of the shifts are near perfect. Occasionally a 4th - 5th shift may still play up, but I'm extremely happy with it now in comparison to what it used to be like.

DO NOT USE THIS DODGY OIL STABILIZER – IT DESTROYED MY ENGINE! This is a warning to anyone considering this oil stabilizer product. I purchased it… Read more

to protect my engine, but it did the exact opposite. The product caused the oil to become excessively thick, restricting oil flow and leading to a spun conrod bearing, which completely seized my engine.

After the failure, I contacted the company and dealt with their so-called general manager, [Name Removed] – and let me tell you, he is as dodgy as they come. After weeks of going back and forth, we agreed they would send a technician to take an oil sample to determine the cause of the failure. I even agreed to pay for the test if it turned out the stabilizer wasn’t the cause.

However, when I asked for the technician’s credentials, [Name Removed] completely ignored my request. Weeks later, they finally sent someone – an auto electrician, who had no qualifications or ability to assess internal engine damage or oil viscosity issues. Completely incompetent for the task at hand.

This felt calculated. I believe [Name Removed] deliberately tried to dodge responsibility and manipulate the situation to avoid accountability. I will be attaching the so-called “report” from their unqualified electrician so you can see how they tried to cover it up.

I have now lodged a formal complaint with the ACCC and included all conversations between myself and [Name Removed] (aka “[Name Removed]”). Screenshots of our exchanges will also be posted with this review to show just how unprofessional and dishonest this company really is.

Avoid this product and company at all costs.