I need to get some grease for a rotary hammer I was given... I need to use grade 3 cause they say that grade 2 is too light and blows by the seals... any idea where I can get it online or the san antonio area? Ive tried and cant find any...I have found some 2.5 made by mystik that ill go to if I cant find the grade 3... only need a small amount not a 55 gallon drum vor home use ....