Another good brand of oil and grease that is plastic safe is made by LABELLE.It can be found at your local hobby shop in the model rr section.Most if not all of their oils and greases are plastic safe.I have used them on plastic many times with no problems. They are also sold in some good sporting good stores as they are also marketed for lubing fishing reals.The 3 in 1 oil is not safe on all plastics.I have had it cause one type of plastic to crack after awhile.If I remember right it was styrene that did not get along with it.The cracks showed up after about 3 or 4 months after adding the oil.


Wayne Reid

Ontario,Canada