So I drove to a gas station. So I drove to a gas station.

My car needed to add gasoline. so My car needed gasoline so

You could also say "I need to add gasoline to my car". I think it sounds better to join this and the sentence together with "so".

My car needed to add gasoline. My car needed gasoline.

My carI needed to add gasolinefill up my car with gas. I needed to fill up my car with gas.

While not grammatically incorrect, it is more common to say "fill up a car with gas".

A Smallhort Piece ofin English A Short Piece in English

Short is used to describe length, small is for the size of things. IN English --> for preposition we say IN a language

Next to the gas station, a person was selling simple street food. and Next to the gas station, a person was selling simple street food and

I joined this and the next sentence together because I think it sounds better

Next to the gas station, a personhawker was selling simple street food. Next to the gas station, a hawker was selling simple street food.

Hawker = 小販

NexI went to the gas station, next, I could see a person was selling simple street food. I went to the gas station next, I could see a person was selling simple street food.

I bought rice and a kindtype of fried pork. I bought rice and a type of fried pork.

type = 一種；sort = 一類

The pork was really delicious. and The pork was really delicious and

Same as before

Eeven now, I can still remember the taste of the pork. even now, I can still remember the taste of the pork.

Unfortunately, I can't remember/recall the exact location of the gas station now. Unfortunately, I can't remember/recall the exact location of the gas station now.

If you want to vary your use of words, you can consider replacing "remember" with "recall".

If I could remember the location, I’d like to go back just to eat the fried pork one more time if one day I go there again. If I could remember the location, I’d like to go back just to eat the fried pork again.

Your original sentence has two aspects that seem weird to me: 1) Why do you want to eat it just “one” more time? Why not go there once a year, for example? 2) “if one day I go there again”: we don’t usually use two “if” clauses in one sentence. Also, logically, even though you don’t remember its location, you still might happen to go there again, in the same way that you happened upon it the first time. Therefore, the second “if” clause would work better without the first: “I’d like to eat the fried pork if one day I happen to go there again.”

If I could remember the location, I’d like to eat the fried pork again/once more time if one day I go there againif I return one day. If I could remember the location, I’d like to eat the fried pork again/once more if I return one day.

"Go there again" is not grammatically incorrect but you can consider replacing it with "return". One day is typically used at the beginning or before a punctuation mark, but rarely in the middle of a sentence.