What oil are you running in your lawnmower?

[Speak2Mountain]

QSUD 5w30 top off with Total Quartz 5w30
Pennzoil filter

 

[InhalingBullets]

Rotella 15w-40, in the push and riding mower.

 

[volk06]

10w-30 conventional/hdeo in my toro, no need to go out of the way for synthetic unless your using a 0/5-XX, imo (or you have some left overs). I change it every fall, probably 25 hours on the push mower.

 

[gizzsdad]

10W -30 synthetic, usually SuperTech

 

[IndyIan]

5W40 Rotella T6 in everything but the road cars.

 

[kohnen]

This brings up an interesting topic: If anybody out there uses Blackstone for a Used Oil Analysis on their lawnmower oil, they've taken this BITOG thing to a whole new level!

 

[Schmoe]

whatever I got left over from previous oil changes....

 

[JeepWJ19]

PYB 10w30

 

[Phishin]

Mobil 1 5w40 TDT

 

[Crispysea]

Straight 30 weight in my Briggs. I'm old school like that. Traveller (WPP) to be exact.

 

[sprite1741]

Whatever I have laying around probably super tech 5w 30 but who knows as I haven't changed it for 5 years. The oil still looks clean and is full so why bother. Just checked it as it sat outside all winter. It's a 25 year old 4.5 hp Briggs self propelled from K- mart, still cutting grass as of yesterday afternoon. Starts on the first or second pull too.

 

[The_Nuke]

My lawnmower's oil is what the manual says it should be - 30HD

 

[danthaman1980]

A synthetic or synthetic blend 10W-30, preferably one with at least 1000 ppm Zinc and viscosity of around 11.5 - 12.0 cSt at 100°C.

Current: QS Defy 10W-30 SL
Past: Shell Rotella T5 10W-30 or Pennzoil Platinum 10W-30
Future: Mobil 1 High Mileage 10W-30

 

[FlyNavyP3]

Originally Posted By: kohnen
This brings up an interesting topic: If anybody out there uses Blackstone for a Used Oil Analysis on their lawnmower oil, they've taken this BITOG thing to a whole new level!


Challenge accepted. But I'll use the cheaper NAPA kit. I have an old Honda mower with about 50-75 hours on the oil. I'll send in a sample for fun. Currently has Valvoline 10w40 Motorcycle oil in it.

 

[Lubener]

Supertech straight 30.

 

[Brigadier]

Rotella T5 10W30

 

[Nick1994]

$1 per quart Castrol GTX SynBlend 5w30 in a Honda mower in Phoenix heat!

 

[NormanBuntz]

Snapper lawn tractor, 46 inch cut, 24 HP B&S: QSUD 5w-30, Baldwin filter

 

[Crispysea]

I saw SAE 30 and 10w-30 at AAP in 20 ounce bottles the other day. It costs the same as a quart of other oils. I looked at the back and it's API SJ. It might be a good choice if you want a high zinc oil.

 

[OptOut]

Castrol straight 40 in the mower and ATV