I'm not sure if a motorcycle oil will be good for his cat. converter. And he doesn't need it because they are plenty of synthetic PCMO with that viscosity.
Reason for lack of 10W-30 full synthetic ?
- Thread starter Exhaustgases
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I'm not sure if a motorcycle oil will be good for his cat. converter. And he doesn't need it because they are plenty of synthetic PCMO with that viscosity.
Serious?
5W-30 or 10w30
Now tell me out of the 2 which one has the lowest viscosity base oil?
I'm not worried about winter as when I was a kid we used straight SAE 30 in all our vehicles year round and in the winter there was a lake in our area that would freeze a foot thick some times.
If memory serves 10w30 for a honda gen3 is recommended in other countrys down to -30 or so, we never even come close to that temp.
Honda can't recommend it in the US, you know fuel economy so its 5W-20, and on the 2010 - 11's 0W-20, many owners use 5W-30 though.
The mention of amazon yeah super high costs there.
I like Amsoil, I just can not afford it now, I used to use it all the time in this particular vehicle, I may have to stop eating and go back to it. That is if I can find a place that sells it.
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I think it says 5W-20 its a 2000 chevy ist product. At the first oil change its been living on 10w30 and is why it is still running perfect.
Yeah ! Especially all the ones dying and eating bearings.10w30 full synthetic definitely does exist, but few if any cars even call for 10w30 anymore
The point would be a No-VII 5W30 would be made with lighter (lower viscosity) base stock than the No-VII 10W30. This would give the 10W30 lower Noack volatility, which is good, and to me therefore makes the 10W30 better.
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Says the guy who lives in Canada. I live in Australia, we can run 10W30, or even 15W40, year round.
Here we get full synthetic oils like Castrol Edge 10W30 A5/B5, that would have a Noack around 6-7%. What’s not to like?
Sounds like a legit question to me.
Are you trolling or serious?
Fair point, but he didn't ask why it is "better", but less common. In places where it gets old, such as the US or Canada, 5W makes all the sense to recommend, from a manufacturer's perspective. All else being equal, the difference in volatility between a 5W and a 10W would be inconsequential compared to the need of being able to start the engine when it's cold.
Patman
Staff member
10w-30 can be made with a lower quality base oil these days compared to 5w-30, so not all 10w30s that are still available are as good as the 5w-30 from the same brand. I still stand by my statement, there are no cars made recently that call for 10w30, and a well made 5w-30 can do everything that a 10w30 can do anyway. There sure are a lot of upset people here but you know it’s true. 10w30 started becoming obsolete a long time ago…
You do know Jaso oils have an API license?
I have no need whatsoever to start below 0°F, but I use a 10w30 with 3.3% Noack.
10w30 is grandpa’s oil. Manufacturers of some of the highest performing engines out there are commonly specifying a 0W40.
The last two vehicles I had that actually called for 10w30 were
- 1997 Audi A4 Quatro 1.8T
- 2001 Volvo V70XC
There are tons of 10w30 oils on Walmart.com. As mentioned, free shipping at $35. What's the problem?
I use 10w30 in my lawn equipment!
I use 10w30 in my lawn equipment!
Patman
Staff member
Yup! Oils like ESP 0w30 are quickly making 5w-30 almost obsolete too
Issue will be he thinks that this is too thin because of the zero winter.Yup! Oils like ESP 0w30 are quickly making 5w-30 almost obsolete too
I have not seen where he has said that?
I would prefer a 10w here if all things were equal - less VII. However it seems they simply brew the 10w with lower quality base stock.
I'm not seeing a lack of choice...
https://www.walmart.com/browse/auto-tires/10w-30-synthetic-oil/91083_1104294_1072084_6661220_7604679
https://www.walmart.com/browse/auto-tires/10w-30-synthetic-oil/91083_1104294_1072084_6661220_7604679
So bottom line is that there is no lack.
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