And you will be perfectly fine doing it. I don't understand where the hypersensitivity to oil originated from. Look for the seal and GF5 spec(obviously the weight) and you are set.
My Dad has torn down a ton of motors, and used to drive about 1/3-1/2 a million miles a year. Certain oils most definitely sucked in the amount of sludge built up in the motor. Also, I used to drive an LS1 Trans Am, 6-speed. With certain oils (Mobil 1 5-30 EP), it would use about 1 quart every 2,000-2500 miles. I switched to the European Castrol 0-30 formula (used to be green, now is gold/clear), and it began using 3/4 quart every 5K miles.
This is why I am "hypersensitive" to oils, as you put it. Personal experience, and experience of my father (someone I trust) who has torn down dozens of high mileage motors after running different oils in them through their lives to see which one kept things cleanest. I suppose since he did this in the real world and not a lab, you could say that the test is subject to contamination, or you could argue that since he was using older motors (did this from the 70's through the 80's), that things are different now, or that my father has some nefarious need to lie to me about motor oil, but none of those arguments against his claimed results really inspire me, to be honest, so I'll motor on on his advice. Whether or not oils have been reformulated since he used them is very subject to debate, and even likely to be so, but the point is that they certainly offered different results. He found Quaker State left a ton of sludge, and on the opposite end of the spectrum, Shell Rotella T (a diesel oil), left the guts of the motors very clean in comparison. He typically would get about 225-250K miles out of a 4.6L Ford SOHC motor using Shell Rotella T, and about 200K out of a Ford 302 (although he had one go past 300K on one occasion, I believe). His current Chevy Work Van (A 5.3 Vortec, I believe), is currently mid-way through the 400K mile range on Shell Rotella T. Before the 4.6's and 5.0's, he ran various engines like 460's, etc. Yes, one can argue that Shell Rotella T 15-40 is too "thick" for the 4.6L SOHC Ford motor, but pulling 225-250k miles out of them before they began using significant amounts of oil, the way he drove them, was darn impressive! He would typically go through 2 transmissions during the car's life cycle if he was lucky, 3 if he wasn't. They typically began slipping or refusing to shift/producing lazy shifts which had the motor bouncing off of the rev limiter (Ford's AOD-E and 4RWwhatever were known to suck massively). He drove the dog crap out of those cars for a living (Escorting over-sized loads down the freeway, including part of the Apollo space-craft, and other random cool things he showed me pictures of as a kid). That entailed a lot banging off the upper end of the tach to "catch a bridge" around a curve and block it off for the semi, etc.
