Zongshen Sierra oil leek or not ?
Hi
Im regularly changeing my oil in my zongshen, every 3 months or 4 000km. Every time i put 1 liter of oil. Today i replaced oil after 3 months of riding. When i was changeing oil i noticed that there was smaller amount of old oil (<1 L). So i took the old oil and put it in plastic bottle with measure scale, and it was only 0.9 L of oil. So my question is, is it normal to loose 0.1L oil in three months of riding (about 3 000km) ?
Sorry for bad english :oops:
Thanks
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