I like amsoil 5w-30 and do a liquimoly engine flush with every oil change.
Pros: engine flush
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What I would do is have the oil changed but make sure you use Valvoline Restore & Protect and a new quality filter (OEM Toyota, Wix, Mobil 1). Drive the car about 1600km, then do the oil change again using new oil and filter, drive again for 1600km, do it a 3rd time.
Pros: quality filter, cleans sludge
Vehicle:
Toyota
Mileage: 1600 km
Always had good results with motul
Pros: good results
Just get Mobil 1 0w-40 better then all of these
Pros: better then all
I switched to 5w30 Pennzoil Ultra Platinum a long time ago on my 2.0T. 140k miles and running strong. FK8 CTR Turbo added around 133k, too. FBO PRL mods!
Pros: running strong, high mileage
Vehicle:
Honda Civic
Mileage: 225308 km
5w40 liquidmoly
Mobil 1 fully synthetic, multi-grade oils only.
Vehicle:
Mazda
Changed ours at 3k and will change again at 6k. After that it’s every 5k. Use Subaru oil and filters.
Mileage: 3000 km
currently I am running the Motul 8100 Econergy, it is good, it wasn't my first choice, but I found it at 40% discount in a physical store and my wallet wouldn't look twice, but it's a little too thin for my liking, and I'm looking to change with my next oil change
Pros: good performance, discounted price
Cons: a little too thin
Mileage: 220000 km
I do believe that Valvoline R and R can cause oil leaks. I have noticed that in a couple of cars.
Cons: can cause oil leaks
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