Texas heat takes care of any oilThe meguiar's cleaner/conditioner combo stuff can be a bit oily on new leather, so just be sparing with it (experienced this on mine with the wheat leather). I really like the Lexol cleaner and their conditioner (not a combo). You really don't need to add conditioner every time you clean your leather as it just adds more and more oil into the pores that eventually gives you a really greasy feel (again, speaking from experience). Go with a good cleaner and a good conditioner that are separate and only use the conditioner every couple of months or so for the commonly used seats and longer for seats that are rarely used.
+1I normally use a plain damp wet soft cloth and since I have windows tinted and garage kept, I don't worry about being sun baked.
My cars lead a pretty spoiled life as garage queens part of the time. The very high UV levels present in our area are really hard on interiors, and exterior plastics.
For seats/inside I stick to 1z Cockpit Premium, as I prefer the "disappearing" semi-matt finish. Keeps the leather very nice, BUT I also don't use any interior product often. Too much product may get "greezy", and look tacky as well. A frequent wipe down with a barely-damp quality microfiber cloth gets used the most. For dry climes, the 1z Gummi Pflege Stift is great for rubber gaskets n' seals.
The exterior of my car gets trampled/trashed frequently, as there are trillions of sticky/squashy/gooey bugs roaming desert highways, especially anywhere near irrigated canals/fields. I swear by (while swearing at the bugs) several Poorboy's World products: Poorboy's W Bug Squash (diluted as per bottle), PB'sW Bird **** Remover, and PB'sW Glass Cleaner are hard to beat for all sorts of Crap (Most Poorboy's World products are very good).
Also, use PB's Bold N Bright, and Opti-Bond Tire Gel on tires as both products do not sling (properly applied) or collect dust. Dust attraction/"static-cling" in low-humidity rules out many popular "detail products" for me. I personally fav: Wolfgang Instant Detail Spritz, and Migliore Cima Sealant (Migliore makes several good-but-pricey products) as "non-static" detail sprays.
All of us could go broke, just buying car-care products?