Opinions on GM 5W30 Oil: Real Mileage & User Experiences in Gasoline & Diesel Engines

Hello, I am asking for opinions on 5W30 Oil from GM. I am interested in real mileage and observations of users of the above-mentioned oil in gasoline and diesel engines.

This oil is theoretically synthetic, I hope I am not mistaken. The only one that I have been using for several years in all my equipment. (I do not impose on my clients) In good diesel, there is yellow over 10,000 km, no carbon deposit, no sludge. I have no objections. The temperature is good. At almost -30, it allowed to start the engine. Driving in the autoban over a distance of 30 km at a speed of over 200, the bushings survived.

Thank you for your answer. I am asking because an exchange is coming and I am thinking of changing to a different brand but I see that there is no such need.

mickemaster wrote:

Hello, I am asking for opinions on 5W30 Oil from GM. I am interested in real mileage and observations of users of the above-mentioned oil in gasoline and diesel engines.

But GM mainly makes cars, not oil refining. In fact, it is not known what this product is because it looks like GM is ordering it from a sub-supplier with the GM logo on the label. Just like Ladybug. Today, oil comes from one supplier and in a year it will be from another, because this one will give a more attractive price.
The same as with Castrol oils (I don't remember exactly and I can't find a link to the page describing it) - the base of products for the Eastern European market is from Orlen, and the supplier of additives is someone else.

Castrol and GM are two oils that I bought only once and it was the last time.
Although I bought castrol API GL 5 a long time ago and I remember that it was the address of Warsaw, ul. Some importer rates, after changing the rear bridge I had to change the bridge later.
And after pouring the GM engine, the engine was so loud that I immediately let it down and used it to lubricate the chain in the petrol saw.

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Megawe wrote:

And after pouring the GM engine, the engine was so loud that I immediately let it down and used it to lubricate the chain in the petrol saw.

I don't think it was an original GM product that was flooded with new engines. Are you talking about 10W40 or 5W30 Dexos 2 oil?

I used to use it, because it was the cheapest oil in the warehouse, in general the engines run, there is no problem with carbon deposits, it will leave gold raid, so I do not recommend it for engines with variable timing stages, it does quite well in Opel, I do not recommend it for VW with unit injectors,
Generally, as someone wrote above, the engine works quite loud, certainly after replacing it with Valvoline or Texaco, the engine works much quieter, so I started using Texaco, but for customers who took over 150,000 (during my service) km on this oil, no there were cases of engine seizure or outrage in the bushing, etc.
I had one customer with a Fiat Ducato 3.0 who drove over 300,000 on this oil. Overall, the car had over 300 when we started using it and still drives, now it has almost a million and nothing was done in the engine, just injectors and a fuel pump. Of course, the car does routes, cools down only in the new year and on holidays, service regularly every 20 thousand.

Speaking of which, I have seen guests collecting empty packages in workshops of company oils. By no means did they look like environmentalists.

mickemaster wrote:

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Megawe wrote:

And after pouring the GM engine, the engine was so loud that I immediately let it down and used it to lubricate the chain in the petrol saw.

I don't think it was an original GM product that was flooded with new engines. Are you talking about 10W40 or 5W30 Dexos 2 oil?

And what, do you think someone will counterfeit oil for PLN 80 (5l)? It is an ordinary Castrol 5W30 C2 / C3 in a 5l can, it costs twice as much.

I poured GM 10 to 40 oil into an old omega 2.0 16V and I bought it next door from a businessman who is getting extra money, who is delighted with the innovative EU economy. After starting the engine, a minute later the oil was in the bulb from which I poured it. I preferred to buy a new oil other than wait what happens and then support the innovative economy with purchasing parts. Enter "GM oil loud engine running" in google and a large list will appear.
Now I buy mainly Liqui Moly oils and parts directly from a large wholesaler.

nasty_photon wrote:

And what, do you think someone will counterfeit oil for PLN 80 (5l)? It is an ordinary Castrol 5W30 C2 / C3 in a 5l can, it costs twice as much.

Buddy, if, for example, they are counterfeit transistors for PLN 2 / pc. why not counterfeit oil for PLN 80?

I have a flooded Skode Castrol 5w40. The meter already has 180 thousand. Nothing is happening. It was like that from the news.

mickemaster wrote:

nasty_photon wrote:

And what, do you think someone will counterfeit oil for PLN 80 (5l)? It is the usual Castrol 5W30 C2 / C3 in a 5l canister costs twice as much.

Friend, if, for example, they are counterfeit transistors for PLN 2 / pc. why not counterfeit oil for PLN 80?

What are the transistors for PLN 2 / pc that are counterfeit?
The reason is the same as in the case of counterfeit money: no one will make copies of PLN 10 banknotes because it is too big a risk and too little profit in relation to the expenditure incurred. Because if you are going to take care of making left oils, with the same effort you will get more for a bulb of LIQUI MOLY oil (PLN 219 5l) than a regular GM oil for PLN 80. This is called economics.

I can see that you have little to do with the economy. It is easier to cheat more people in small amounts than a few in large amounts. Unfortunately, your discussions do not add anything to my topic. An example of transistors is 2SC2078, both working and so-called "painters" you could buy at one time for 2 PLN / pc.

mickemaster wrote:

I can see that you have little to do with the economy. It is easier to cheat more people in small amounts than a few in large amounts. Unfortunately, your discussions do not add anything to my topic. An example of transistors is 2SC2078, both working and so-called "painters" you could buy at one time for 2 PLN / pc.

The psychological effect by which people buy counterfeit products works completely different: people are attracted by a product that is expensive and considered prestigious / premium / high-end but at a much lower price. That is why Adidas shoes, Louis Vuitton handbags or Rolex watches are counterfeited because for many people it is an object of desire. Nobody imitates Chinese sneakers or
a market t-shirt for PLN 10.
Likewise, no one will counterfeit GM oil, which costs PLN 16 per liter (5-liter packaging), since the cheapest AAB-Cleantec 5W-30 oil in a 208-liter barrel costs PLN 15 / liter.
The example of transistors is completely wrong, because the car market is much larger than the market of DIYers repairing old CB radios. There are over 18 million cars registered in Poland, each one contains a few liters of oil, which is changed every year (theoretically).
And how many transistors in power amplifiers are replaced annually in Poland? Even if 500-600 it is negligibly small.

After your posts you can see that you want someone to confirm that you are doing well pouring GM oil into your car. So I can write to you: yes, pour this oil, it is very good.

nasty_photon wrote:

The psychological effect by which people buy counterfeit products works completely different: people are attracted by a product that is expensive and considered prestigious / premium / high-end but at a much lower price. That is why Adidas shoes, Louis Vuitton handbags or Rolex watches are counterfeited because for many people it is an object of desire. Nobody fakes Chinese sneakers or
a market t-shirt for PLN 10.
Likewise, no one will counterfeit GM oil, which costs PLN 16 per liter (5-liter packaging), since the cheapest AAB-Cleantec 5W-30 oil in a 208-liter barrel costs PLN 15 / liter.
The example of transistors is completely wrong, because the car market is much larger than the market of DIYers repairing old CB radios. There are over 18 million cars registered in Poland, each one contains a few liters of oil, which is changed every year (theoretically).
And how many transistors in power amplifiers are replaced annually in Poland? Even if 500-600 it is negligibly small.

After your posts you can see that you want someone to confirm that you are doing well pouring GM oil into your car. So I can write to you: yes, pour this oil, it is very good.

Another post off topic ...
PS I don't want anyone to confirm my belief in any way. I did the previous exchange in ASO, so I was wondering whether to go there again. The oil has already been changed, I poured Liqui Moly top tec 4600, which meets the Dexos 2 standard.

mickemaster wrote:

The oil has already been changed, I poured Liqui Moly top tec 4600, which meets the Dexos 2 standard.

Did you notice any difference in engine operation? Quieter work in the cold? Diesel or gasoline?

I did not notice any difference in engine operation on the LM. I have already done two exchanges since then. I went back to the GM. 1.7 cdti engine.

So there is no magic silencing of the engine, an increase in dynamics (sic!) Or even a decrease in fuel consumption? However, pragmatism and common sense prevail. Bravo mickemaster!

I don't see any difference between the oils, except when it comes to the temperature of the oil under long load and low speeds in heavy turbo gasoline. Be it Mobil, Castrol, LM, Motul, Valvoline.
I have two Insignia CDTIs at GM and no problems with oil or oil pressure.

Instead of more expensive oil every 30kkm, it is better to buy a cheaper one and change it every 10-15kkm.