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

[Hammermechanicman]

9 pages......WOOHOO!


"They burn pump gas without a stabilizer and then complain that the mower won't start in the spring."

I don't use stabilizer and I use pump gas in over a dozen pieces of equipment. Still waiting for problems.

 

[Gescha]

J

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.

Just bought Castrol straight 30 weight oil from Amazon. It was also on Walmarts web site for a bit less a few weeks back.

 

[Gescha]

Walmart SuperTech 30W non detergent is perfectly fine in a Briggs motor. I've used it for years in my older motors. When you drill down there is really nothing special going on inside a lawn mower engine. The newer Briggs mowers call for full synthetic 15W50. If you wanna get crazy over oil run that cause of it's sump temp heat break down resistance. Non detergent or not.

Non detergent oil is ok for my older Gravely mowers but please use high detergent oil in more modern engines.

 

[TobyU]

Once Upon A Time so-called "diesel oils" were HDFOs, Heavy Duty Fleet Oils. To simplify things for fleet managers one oil suitable for diesel, gasoline, and many transmissions/gearboxes was formulated. Fleet managers watch costs closely, including time between overhauls. HDFO vendors had to deliver a superior product, couldn't sell oil with only a picture of a big-busted model. Not that they didn't have some racy promotional posters for the fleet customers...

So we have Delvac, Delo, and Rotella, competing head to head. Product improved.

Then recently emission regulations for both diesel and gasoline have gotten to the point an oil which meets one is harmful for the emission system of the other. Lawnmowers don't worry much about catalytic converters, oxygen sensors, or diesel particulate filters, yet. So today's "diesel oils" are diesel only. But not just for emissions. Special additives are used to neutralize the byproducts of gasoline combustion (and ethanol), and special additives to neutralize the byproducts of diesel combustion. Lacking those, acid forms. The diesel-only oils on the shelf may still have gasoline byproduct neutralizers but here is no guarantee, and no guarantee for how long it will continue.

Use a gasoline rated oil in gasoline engines. If you can find dual gasoline/diesel rated "diesel oil" then by all means that is fine to use. Be ware it will have very strong detergent action to carry the soot produced by a diesel. It may scour your engine of soot you didn't know was in there. It may turn black very quickly, but that is OK, black oil means it is working, does not mean it has gone bad.

As I said, if anything, it may be better for your engine. Lol

 

[TobyU]

I have never ever ever seen a "30W" oil.

None of the links provided go to a "30W" oil, no matter Amazon's ignorant description writers often say so. Look at the product pictures "SAE 30" no W. Sometimes "30WT".

There is "30 weight" oil, which is significantly different from a winter rated 30W oil.

Nothing wrong with Walmart Super Tech oils. There are very few base oil refiners in the world, everyone else (including Castrol) is a blender who buys base oil from the refiners, mixes additives, bottles and sells under their own brands. Super Tech consistently gets very good reviews from those who actually test oils at Bob Is The Oil Guy.

Over the years when asked their favorite oil the guys at Blackstone Labs https://www.blackstone-labs.com/ have always replied tongue-in-cheek, "SAE 30".

Probably never seen a "Straight 30" oil either that was printed on the bottle/can but that's what people call it and that's fine.
I would say at one time "straight" or "straight weight" has been printed on an oil container.

 

[mechanic mark]

B&S 30W OIL - Google Search

30W OIL FOR LAWNMOWER - Google Search

 

[Hammermechanicman]

Non detergent oil is ok for my older Gravely mowers but please use high detergent oil in more modern engines.

Help me understand why the gravely needs non detergent oil.

 

[bodean]

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.

I’ve been using Shell Rotella 15W40 T4 oil in all my non lawn equipment for over 25 years and have never had any premature wear issues. I buy it by the 5 gal pail to get it cheaper than individual quarts.

 

[bodean]

I’ve been using Shell Rotella 15W40 T4 oil in all my non lawn equipment for over 25 years and have never had any premature wear issues. I buy it by the 5 gal pail to get it cheaper than individual quarts.

Correction; I meant to say in all my lawn equipment.

 

[shurguywutt]

Most useless thread ever. LOL