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2007 LaCrosse 3800 out: Valvoline conventional 5w30, ProSelect 21040, 5000 miles in: Pennzoil Dexos blend 5w30, same filter.

I do like to warm up my engine before driving away. The time depends on how long the car has been sitting for and how cold it is outside. My cars have automatic climate control that is almost imperceptible when the engine is cold and will gradually increase the blower fan as heat is available...

WOW, that is a nice looking oil. I'd like to try that out.

To the OP: I don't see a reason to change what you are doing. Well, maybe extending the oil change a little longer. 8 quarts is a lot of oil to wear out, so to speak.

Yep, we don't get as much as Cleveland.

I would think about changing it. By that I mean whenever you get around to getting the oil change supplies (if you don't have new oil and filter already) and approximately with the next time you feel like doing the change. For me in that position that would be around 2 weeks. Then it will pop...

The VQ engine family has always suggested premium fuel. I'm sure nearly none of these vehicles receive it. Realistically the cost difference is not enough to deter the use of premium in my opinion. From what I remember in driving Murano's with the CVT is under light driving the engine is lugged...

I have switched my last two Regals to full syn at time of purchase. Both cars had almost the same mileage of 175,000. You certainly will be good to go with full synthetic, and if you want to switch back then that is ok also.

Thanks for the heads up! I'm getting some!

5.5

Plan on a Catalytic convertor replacement.

I heard Maxlife is rebottle Durablend. I don't know how true that is.

The Tesla is amazing. I drove a Tesla S and it has instant power with the same acceleration at any speed. 30 mph? 60 mph? 80 mph? Smash it and it accelerates effortlessly.

You guys are feeding into this useless post? Come on Merc, I used 5w30 in my 98 Supercharged 3800 Regal and drag raced it with bolt on's with zero issue and 220,000 Miles. My 03 Supercharged Regal says 5w30 on the cap unlike the 98 and both cars receive 5w30 oil every 7-11k mile changes...

Subaru filter because of the correct bypass pressure.

Hard to say without a print out or a screen to look at. (Toe is not set in any kind of way to compensate for road crown btw.) If you are holding the steering wheel straight around 25-35 mph on a decent road does it pull left?

Cold would be the easiest but I have removed spark plugs on warm, cold, hot engines of all kinds for years at work.

You most like have a bad wheel bearing (common on those vehicles). If you jack it up and spin each rear wheel interdependently you should be able to narrow it down.

My friend has a 2014 Focus SE that the olm told her to change the oil almost exactly at 6 month intervals. I changed it a few months ago when the light came on and the oil only had 1500 miles on it.

When did Valvoline drop Purolator? ----- Filter looks like the orange can I ran on the Grand Prix for 6ish months. I wasn't impressed and upgraded that car to the ToughGuard.