Break In What fuel ratio should I use?

[Grantrocks]

I know that there are already lots of threads on this forum about this, but none of them are consistent. I see some people saying stick to the recommended 16:1 for break in, some saying use 20:1, some saying 24:1, some saying use 30:1, even some saying use 32:1 or 40:1. Then I have people saying use normal oil with only so much ratio and some people saying use synthetic oil. Im absolutely confused. I already ran my first engine and it runs rough with 16:1. I have already fouled 3 plugs in less than a month. I just need some help with what I should use. I have a new engine with 100ccs coming in a couple of days and I want to properly break this one in using the knowledge that I have gotten from the 80cc. I'm leaning towards just doing a 40:1(synthetic) with break in and after break in as that's what a lot of people are saying to do.

 

[Gordy]

It all depends on what engine. Most cheaper engines however, 20:1 full conventional oil for brake in, and 32:1 after is a good rule of thumb

 

[Grantrocks]

It all depends on what engine. Most cheaper engines however, 20:1 full conventional oil for brake in, and 32:1 after is a good rule of thumb

So like 20:1 of non-synthetic, and 32:1 of synthetic afterwards?

 

[Gordy]

So like 20:1 of non-synthetic, and 32:1 of synthetic afterwards?

Yup.

 

[Grantrocks]

Yup.

Thank you . Can't wait for the 100 cc to arrive.

 

[Gordy]

Thank you . Can't wait for the 100 cc to arrive.

Which one did you order?

 

[weefek]

Gordy is right. I've seen countless people over the past 2.5 years or so on here who have ran 40:1 without asking anybody first and have grenaded their engines.

I did 20:1 for the first 3 tanks and ive done 32:1 / 30:1 ( it always ends up a little on the oiler side for safety factor, i only mix about 5L at a time so hard to measure super precisely) and have a bit over 1000 miles on the engine and it runs like a top.

 

[Grantrocks]

Which one did you order?

I just bought a 100cc off of eBay. https://www.ebay.com/itm/325880106218

 

[Daytripper24699]

I know that there are already lots of threads on this forum about this, but none of them are consistent. I see some people saying stick to the recommended 16:1 for break in, some saying use 20:1, some saying 24:1, some saying use 30:1, even some saying use 32:1 or 40:1. Then I have people saying use normal oil with only so much ratio and some people saying use synthetic oil. Im absolutely confused. I already ran my first engine and it runs rough with 16:1. I have already fouled 3 plugs in less than a month. I just need some help with what I should use. I have a new engine with 100ccs coming in a couple of days and I want to properly break this one in using the knowledge that I have gotten from the 80cc. I'm leaning towards just doing a 40:1(synthetic) with break in and after break in as that's what a lot of people are saying to do.

40:1 if it is an aluminum cylinder and 32:1 if it is iron bore. I use Lucas semi synthetic 2 stroke oil but that's completely up to the person's taste. Hope this helps...

 

[DAMIEN1307]

40:1 if it is an aluminum cylinder and 32:1 if it is iron bore. I use Lucas semi synthetic 2 stroke oil but that's completely up to the person's taste. Hope this helps...

We NEVER recommend 40:1 on this forum...It is just not enough oil to do the job right...Read the following URL links to postings on this topic.

And especially for breakin purposes.

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