Reminder for air cooled engines

[xgmad]

It is summer time, as I prepare to change the fluid, remember to check your oil and make sure you put in something thicker while it is summer time, I am going tomorrow to go get a quart of 20w50 to use in the briggs mower, which I think lost compression after the experiment of using 5w20 castrol GTX from the intense blue smoke, who knows.

Air cooled engines for the win!

 

[Dave9]

Probably mostly the lower viscosity making it past the piston rings. Burning in the cylinder, you might now have increased compression switching to a higher viscosity oil due to carbon buildup in the head, but might also need a new spark plug(s).

 

[OilMagnate]

Nah, I'll stick with my 5W-30 SN full synthetic, the same that I've been using year-round for the last 1,100+ smoke-free, choke-free, adjustment-free, and trouble-free hours in the Kawasaki V-twin.

 

[Skippy722]

My mower has 5w20 in it. Been running fine, just burns a little, like 1/2 quart a month mowing 2 acres once a week.

 

[Eddie]

I'd also stick with a 5w30 synthetic.

 

[zzyzzx]

I'd also stick with a 5w30 synthetic.

That's what I switched my riding lawn mower to.

 

[BMW Dom]

10w30 synthetic is working fine for me.

 

[vwmaniaman]

I use straight 30 wt in all my air cooled motors including my VW Beetle. Never have had a problem.

 

[Kira]

I bought a qt. of 40W for my 40+ year old mower (B&S on a Sensation) and the counterman questioned my logic.

 

[stangguy]

I bought a qt. of 40W for my 40+ year old mower (B&S on a Sensation) and the counterman questioned my logic.

That is a mower brand I don't hear much. I was a Sensation dealer for many years, many years ago.

 

[wpod]

It is summer time, as I prepare to change the fluid, remember to check your oil and make sure you put in something thicker while it is summer time, I am going tomorrow to go get a quart of 20w50 to use in the briggs mower, which I think lost compression after the experiment of using 5w20 castrol GTX from the intense blue smoke, who knows.

Air cooled engines for the win!

Think it lost compression? It either did or it didn't . What are missing something here? This is a conundrum.

 

[nthach]

I’m using 10W-30 CK-4 or SN/SP in anything Honda, and 15W-40 in anything Briggs or Tecumseh.

I do have a bottle of PP Euro dexos2 in the garage for the next small engine oil change.

 

[xgmad]

My mower has 5w20 in it. Been running fine, just burns a little, like 1/2 quart a month mowing 2 acres once a week.

Does yours take a quart? mine takes half of a quart.

 

[Skippy722]

Does yours take a quart? mine takes half of a quart.

27HP 2 cylinder lawn tractor.

 

[GSCJR]

350mL of 5w-20 in my vintage Honda HRS21 (GXV110).

 

[OilMagnate]

Off-topic, but I have to ask. I feel it's strangely applicable to the tone of this thread.

xgmad: Why are you running 20W-50 in a 2020 Toyota Camry?

 

[xgmad]

Off-topic, but I have to ask. I feel it's strangely applicable to the tone of this thread.

xgmad: Why are you running 20W-50 in a 2020 Toyota Camry?

It is to prove that thicker oils shall not destroy engine, but protect it longer, I am running it all year round, and it runs great, just as the day my dad bought it from the dealership.

 

[JavierH19]

It is summer time, as I prepare to change the fluid, remember to check your oil and make sure you put in something thicker while it is summer time, I am going tomorrow to go get a quart of 20w50 to use in the briggs mower, which I think lost compression after the experiment of using 5w20 castrol GTX from the intense blue smoke, who knows.

Air cooled engines for the win!

Ive had a bit of success with engine restore in non vvt vct engines. Less burning in old small engines I've tried it in.

 

[xgmad]

Ive had a bit of success with engine restore in non vvt vct engines. Less burning in old small engines I've tried it in.

I might try this, I have nothing to loose, its a walmart push mower with a small briggs engine in it.

 

[JavierH19]

I might try this, I have nothing to loose, its a walmart push mower with a small briggs engine in it.

Half ounce should do. Tried it on two old clapped out briggs and they burned less after a while when it had time to work in. Took them both to Mexico on the back of my truck and they're still running okay over there. The one thing I also told the guy maintaining my property to do is go use about 1.5oz per gallon in them. A little bit of upper cylinder lube helps the engine not wear out so bad. I also do that to my new small engines with no ill effects and it should reduce wear by a bit.