It'll be fine yeah ?

jmurray01

jmurray01

, , 1,000 Post Club
As you probably know, I've been using 10W40 oil in my Mountfield 100cc mower since I bought it.

I've only used it for 4 hours with the 10W40 though.

I know I shouldn't have used the 10W40, but I did, who knows why!

Anyway, I bought some Mountfield SAE30 (Straight-30) from the garden store today, which is exactly what the mower says it needs.

The mower hasn't shown any signs of damage, so I hope 4 hours of use with 10W40 oil hasn't done any lasting damage...

Will it have ?

Personally, I think it'll have actually helped the "bedding in" period, as the lack of lubrication will have helped the components get into the right "groove", am I right ?
 
No problem... you likely had better lubrication with the multi viscosity oil... I would never use a single wt. oil , especially in an air cooled engine. The only way to improve on a multi vis oil is to use a Synthetic multi vis... and the only improvement to that would be.. use a Diesel rated Synthetic multi viscosity...

You Never had a "lack of lubrication" using the 10-40.... :smile:KennyV
 
KennyV said:
No problem... you likely had better lubrication with the multi viscosity oil... I would never use a single wt. oil , especially in an air cooled engine. The only way to improve on a multi vis oil is to use a Synthetic multi vis... and the only improvement to that would be.. use a Diesel rated Synthetic multi viscosity...

You Never had a "lack of lubrication" using the 10-40.... :smile:KennyV
Click to expand...

Kenny, beg to differ but the last half dozen new push mowers I have purchased clearly said "do not use 10W-40 oil in the engines. The majority recommended a straight 30W.

And using diesel rated synthetic multi-viscosity on a little mower engine would be extreme overkill.

I just changed the oil on my Yardpro (Husqvarna) Kohler engined pusher before I came inside tonite. Used a straight 30W which is what was recommended.
 
jmurray01 said:
As you probably know, I've been using 10W40 oil in my Mountfield 100cc mower since I bought it.

I've only used it for 4 hours with the 10W40 though.

I know I shouldn't have used the 10W40, but I did, who knows why!

Anyway, I bought some Mountfield SAE30 (Straight-30) from the garden store today, which is exactly what the mower says it needs.

The mower hasn't shown any signs of damage, so I hope 4 hours of use with 10W40 oil hasn't done any lasting damage...

Will it have ?

Personally, I think it'll have actually helped the "bedding in" period, as the lack of lubrication will have helped the components get into the right "groove", am I right ?
Click to expand...

Every new 4 stroke small engine I have owned has been given an oil change within ONE OPERATING HOUR. A new engine always has a lot of crud and metal shavings inside it, and to leave the crap inside the engine until the first specified oil change makes no sense to me at all. Same as with my new cars or trucks, I change the oil and filter within 300 miles of ownership. Why leave all the crud in the engines for 5000 miles?
 
jmurray01 said:
As you probably know, I've been using 10W40 oil in my Mountfield 100cc mower since I bought it.

I've only used it for 4 hours with the 10W40 though.

I know I shouldn't have used the 10W40, but I did, who knows why!

Anyway, I bought some Mountfield SAE30 (Straight-30) from the garden store today, which is exactly what the mower says it needs.

The mower hasn't shown any signs of damage, so I hope 4 hours of use with 10W40 oil hasn't done any lasting damage...

Will it have ?

Personally, I think it'll have actually helped the "bedding in" period, as the lack of lubrication will have helped the components get into the right "groove", am I right ?
Click to expand...

If anything should go awry with that engine...it's not because of 4 hours with 10w40. I'm sure of that.
I would not give it another thought.
 
RobertBrown said:
If anything should go awry with that engine...it's not because of 4 hours with 10w40. I'm sure of that.
I would not give it another thought.
Click to expand...

Made me think....every new mower I have purchased in the last 20 years came with a 21 ounce bottle of oil in the carton and there were warnings festooned all over the info included to be SURE to add the oil before starting the engine. All were packaged with 30W. Either Mountfield is penny pinching by not including oil with their new mowers, or they are putting in the wrong weight.
 
JDgreen said:
Made me think....every new mower I have purchased in the last 20 years came with a 21 ounce bottle of oil in the carton and there were warnings festooned all over the info included to be SURE to add the oil before starting the engine. All were packaged with 30W. Either Mountfield is penny pinching by not including oil with their new mowers, or they are putting in the wrong weight.
Click to expand...

I think he bought it from a dealer? Probably had dealer prep......
 
JDgreen said:
Every new 4 stroke small engine I have owned has been given an oil change within ONE OPERATING HOUR. A new engine always has a lot of crud and metal shavings inside it, and to leave the crap inside the engine until the first specified oil change makes no sense to me at all. Same as with my new cars or trucks, I change the oil and filter within 300 miles of ownership. Why leave all the crud in the engines for 5000 miles?
Click to expand...
Well my mower said to change it within five operating hours for the first change.
 
JDgreen said:
Made me think....every new mower I have purchased in the last 20 years came with a 21 ounce bottle of oil in the carton and there were warnings festooned all over the info included to be SURE to add the oil before starting the engine. All were packaged with 30W. Either Mountfield is penny pinching by not including oil with their new mowers, or they are putting in the wrong weight.
Click to expand...
Well it is very rare for a mower in the UK to come with oil.
 
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