Real feeding of oil in OLETF and LETO rats. OLETF consumed significantly more 50, 75, and 100% oil solutions compared to LETO. There were no strain differences in consumption of 12.5 and 25% oil. Within strains, both OLETF and LETO consumed significantly more 12.5 and 25% oil compared to other concentrations tested (50 – 100%). Data are expressed as means ± SEM. * P < 0.05, *** P < 0.001 denotes statistical significance between strains. † denotes statistical significance within strain, P < 0.01.