Mafuta a petulo ali ndi poyatsira kwambiri kuposa dizilo, makamaka chifukwa cha kusakhazikika kwake kwakukulu. Flash point yake ndiyotsika kwambiri, pafupifupi 28 madigiri Celsius.
The flash point imatanthauzidwa ngati kutentha komwe mafuta, pakufika kutentha kwina ndi kukhala pamoto wotseguka, kuyaka kwakanthawi. The auto-ignition point imatanthawuza kutentha kumene mafuta amayaka akakumana ndi mpweya wokwanira (mpweya).
Nthawi zambiri, kung'anima kwapansi kumalumikizana ndi poyatsira moto wapamwamba. Chifukwa chake, kung'anima kwa petulo ndi kotsika kuposa dizilo, koma malo ake oziyatsira okha ndi apamwamba.