Synthetic Oil - Page 2

elkhunter11 · #31 04-09-2018, 09:57 PM

Quote:

Originally Posted by Arty

If you mean rated viscosity at a particular temperature, for any particular number the 'regular' oil and synthetic will be the same when new. That's why they have ratings. 10w-30 will be the same as 10w-30, and 15w-40 will be the same as 15w-40..

Oils are rated based on their viscosity at two temperatures, 0F and 212F, they are not rated at colder temperatures. At -30 or -40 synthetic oil flows much easier than mineral oil of the same viscosity rating.

angery jonn · #32 04-09-2018, 10:15 PM

Quote:

Originally Posted by ctd

I use to do oil anyalisis on my engines. (It does not pay for itself).
10,000km changes seem to be the balance between oil is still fine and I feel good about myself.

On my diesel running 15w40 conventional I ran it to 20,000km and the sample came back as still good to run. I did that a couple of times.

As for gas engines it was the same at 10,000km the oil was still good to run.
Do we change oil prematurely. Yup. Does it give us price of mind, yup. Does it keep people employed? Yup.

If you have a argument for or against extended or short oil changes. Explain your oil sampling procedure and results. I am curious.

This right here.

Arty · #33 04-09-2018, 10:51 PM

Quote:

Originally Posted by elkhunter11

Oils are rated based on their viscosity at two temperatures, 0F and 212F, they are not rated at colder temperatures. At -30 or -40 synthetic oil flows much easier than mineral oil of the same viscosity rating.

If the viscosity rating becomes invalid, or less valid, at -30 whereby the effective viscosity rating of the mineral oil is actually higher than the synthetic, you could just select a notch or two lower w-rated mineral oil for the same performance, no?

Once the engine warms up, it becomes a moot point.

elkhunter11 · #34 04-10-2018, 06:50 AM

Quote:

Originally Posted by Arty

If the viscosity rating becomes invalid, or less valid, at -30 whereby the effective viscosity rating of the mineral oil is actually higher than the synthetic, you could just select a notch or two lower w-rated mineral oil for the same performance, no?

Once the engine warms up, it becomes a moot point.

Except you won't find a mineral oil that flows the same at -40 as a 0w30, or 5w30 full synthetic oil. And if you could dilute a mineral oil enough to get it to flow like a full synthetic at -40 , would it still provide proper lubrication?

michaelmicallef · #35 04-10-2018, 07:09 AM

Was just in Whitefish Montana and picked up 4 jugs of full synthetic Quaker state 5w20 for 19.00 buck a jug. And that’s the regular price at Walmart. Other brands only a couple of bucks more. That is what we should be wondering about. Why the hell is that stuff so expensive here?

elkhunter11 · #36 04-10-2018, 07:15 AM

Quote:

Originally Posted by michaelmicallef

Was just in Whitefish Montana and picked up 4 jugs of full synthetic Quaker state 5w20 for 19.00 buck a jug. And that’s the regular price at Walmart. Other brands only a couple of bucks more. That is what we should be wondering about. Why the hell is that stuff so expensive here?

When you convert to Canadian currency and compare to AMS lower line of full synthetic at the member price, the difference is not as dramatic.

Pathfinder76 · #37 04-10-2018, 08:17 AM

Thanks for the responses. Interesting stuff.

Lorne D · #38 04-10-2018, 08:37 AM

Best follow manufacturers manual.

fordtruckin · #39 04-10-2018, 08:38 AM

Quote:

Originally Posted by michaelmicallef

Was just in Whitefish Montana and picked up 4 jugs of full synthetic Quaker state 5w20 for 19.00 buck a jug. And that’s the regular price at Walmart. Other brands only a couple of bucks more. That is what we should be wondering about. Why the hell is that stuff so expensive here?

Ugh I would never use Quaker state or pennzoil in one of my vehicles. The oil is to waxy when it gets cold... plus it smells like egg salad... lol

michaelmicallef · #40 04-10-2018, 08:42 AM

Quote:

Originally Posted by elkhunter11

When you convert to Canadian currency and compare to AMS lower line of full synthetic at the member price, the difference is not as dramatic.

Where you buying your oil from. Even on sale it’s 36 bucks at crappy tire. You do the math. Ok so I paid 27 bucks instead of 36 or 45 bucks . $46 being the regular price. Any how got enough oil for two oil changes in two cars.

elkhunter11 · #41 04-10-2018, 09:00 AM

Quote:

Originally Posted by michaelmicallef

Where you buying your oil from. Even on sale it’s 36 bucks at crappy tire. You do the math. Ok so I paid 27 bucks instead of 36 or 45 bucks . $46 being the regular price. Any how got enough oil for two oil changes in two cars.

I buy direct from AMS, It's still a bit more than buying in the USA, but much cheaper than paying full price at Canadian Tire.

gtr · #42 04-10-2018, 09:08 AM

Quote:

Originally Posted by chuck

Thanks for the responses. Interesting stuff.

I don't agree with you Chuck. After selling oil for twenty five years, I find this more entertaining, than interesting.

Big Grey Wolf · #43 04-10-2018, 09:51 AM

Read a good technical paper while back on new high end mineral oil developed for diesel trucks. They did study and only changed filter every 10,000 km and ran oil for 50,000 km with no wear, based on lube oil analysis. Major Oil companies product, forgot if was Shell or Exxon.

JonBoy · #44 04-10-2018, 10:14 AM

Quote:

Originally Posted by elkhunter11

It depends on the filter you use, and how often you change it. In general. you can extend your oil change intervals if you use a higher capacity filter, or change it between oil changes.

Bingo! The oil itself is good for quite long - 20K+ kms is not unreasonable. However, most filters lack the capacity to keep properly filtering for that long so you need to account for that.

I do my own oil changes and my vehicles use 5L or less for an oil change so I just stick with standard oil change intervals (7K kms, give or take), even though I use synthetic oil. It's an extra oil change a year, tops, so the cost is minimal and I know the car is not being "stressed" by extended oil changes or poor filtering.

FCLightning · #45 04-10-2018, 10:36 AM

19 liter pail at UFA every spring at their lube sale
https://www.ufa.com/petroleum/Pages/...sale-2018.aspx
Hard to beat that pricing.

dicknormal · #46 04-10-2018, 01:47 PM

I do my oil changes at 5000. Oil filter, fuel filters and 15 litres of synblend for $136.00 all in. 2008 6.4 with 132000 on it. Oil analysis every 3rd change for $16.00 comes back 100% good across the board every time. Might be over kill but peanuts compared to an engine.

Fwee6 · #47 04-10-2018, 03:50 PM

Quote:

Originally Posted by ctd

I use to do oil anyalisis on my engines. (It does not pay for itself).
10,000km changes seem to be the balance between oil is still fine and I feel good about myself.

On my diesel running 15w40 conventional I ran it to 20,000km and the sample came back as still good to run. I did that a couple of times.

As for gas engines it was the same at 10,000km the oil was still good to run.
Do we change oil prematurely. Yup. Does it give us price of mind, yup. Does it keep people employed? Yup.

If you have a argument for or against extended or short oil changes. Explain your oil sampling procedure and results. I am curious.

You win best post in my opinion.

sako1 · #48 04-10-2018, 07:57 PM

Just some food for thought..... Detroit diesel now states they are recomending 120 000km intervals between changes. Mineral oil. Warranty approved.

RandyBoBandy · #49 04-10-2018, 09:10 PM

https://www.bobistheoilguy.com/forum...s.php?ubb=cfrm
Have a look see and knock yourself out learning