I use that type of pump for bio on my filling station. As KH said very noisy, works great on bio, but I'm not sure how it would cope with cold veg oil. The vanes are likely to be plastic or possibly some type of carbon and may not fair well if the liquid is too viscous. Many have a bypass valve built in.
For the same or similar money you could pick up a second hand Mono. That will happily pump all sorts of gloop complete with small lumps and BCBs all day long. Only problem is the availability, they only come up on ebay once in a while.
