Can't find 30W oil anywhere in my area, or on line.

[MParr]

No, it's made by Warren Oil Company LLC which is now owned by Trail Creek Investments. The name, "SuperTech" is a brand name owned by Walmart.

It's made by Highline Warren, formally Warren Distribution. Mag 1 is Highline Warren's flagship oil. They blend for many retailers.

 

[Auto Doc's]

Heck, in today's throw away society and poor-quality machines, the oil is outlasting the machine.

 

[slomo]

Again....10W-30 IS 30 weight.

No it's not guy.

It's a thin 10 grade with a ton of viscosity improvers to "act" like a 30w at 212F or 100C. This is apples to washing machines fella.

A straight up 30 weight is much thicker than any 10w-blah blah. Plus it doesn't break down and require more oil as Briggs, Kawi, Kroller and so on, all state about using multi- grade oil.

 

[slomo]

The only straight 30W I can find is Super Tech but I have seen the independent wear test run on it and is ABSOLUTELY NOT as good as the nationally-recognized name brands.

Would love to see this "test". Please post it up here.

Also please include what company published this "test".

Current Supertech 30W is off-highway spec'd at an SG rating. Remember waaaay back in the day with flat tappet cams and lifters? Those were the SG days. Full of zddp zinc and anti-wear goodies.

 

[Auto Doc's]

I'm looking for Castrol 30W oil and cannot find it anywhere, on-line or locally. I've checked AutoZone, Advance, O'Reilly, Walmart, Lowe's and Home Depot. So I decided to try for other brands, brands I recognize, not this cheap unknown stuff. The only straight 30W I can find is Super Tech but I have seen the independent wear test run on it and is ABSOLUTELY NOT as good as the nationally-recognized name brands.

Hello Alex,

Want to know more about oil testing and legitimate information, check out Lake Speed Jr. on You Tube. He is a legitimate "oil guru". Learn from people who work in the oil testing business, not from 100 different "traditional user opinions" like you will see here.

Most modern oils are "multi weight" to increase their flow characteristics. Straight weight oils like 30HD and 40HD have gone out of popularity. The biggest issue involving straight weight oils is the warmup time required to get the oil heat actually circulating efficiently.

Some small engine (and larger) equipment manufacturers are still publishing outdated oil use recommendation because of complacency, and it is much easier to keep regurgitating old information.

 

[Skippydiesel]

"Straight weight oils like 30HD and 40HD have gone out of popularity. The biggest issue involving straight weight oils is the warmup time required to get the oil heat actually circulating efficiently."
Partly correct;
Multi grade oils do indeed act like a lower viscosity oil when cold, allowing for more effective initial circulation.
Also;
By having a lower viscosity when cold, they reduce the amount of energy required to rotate the engine, less wear on the starting mechanism, easier starting, possibly longer battery life and/or small battery required.
Reduce the "drag" /resistance of the oil which should translate into lower fuel consumption.
Lower fuel consumption = lower pollution.

The "popularity" you refer to is almost entirely driven by the oil & engine companies - the man in the garden has had little if any choice in the matter. In my warmish part of the World we have been perfectly happy with the performance of mono grade 30 oils for many decades. The advent of multi grades for small engines has seen increased per litre costs with nil tangible benefits