To be the devils advocate... yes changing engine oil can be tuning... modern engines use such advance alloys that engine oil can be thinned down to 0w20... This maximizes economy but still adequately lubricates spiny thingies. When I supercharged the 3.6 in my Gladiator, I changed the oil weight to 5w20 per the recommendation of the supercharger company. This supposedly reduced ring blow by and helped keep things lubricated under boost.
Race teams often use pressure to alter a shocks performance on the go. Its a band aid, because they don't always have the time to pull all of the shocks and properly re tune. The driver says "its a little soft on the big stuff" and the tuners will add x amount of nitrogen pressure.
What your doing may be silly, but I say hell yeah. Lets Learn