Castrol GTX 20W-50 Conventional Motor Oil, 5 Quarts

Very good quality conventional motor oil, and a great price, as I prefer conventional over sythetic, and if you use motor oil according to the region and the climate you live in, your vehicle will last longer and you'll thank yourself for it in the long run. It's awful hot where we live in the south, and I have used heavier weight motor oils for over 30 years, and have never had an issue with it, hotter climate use a heavier weight, colder climate use a lighter weight. Excellent performance and lubrication, great value for the money, CASTROL has always produced a good quality motor oil.

This is good oil.But, I made the mistake of also changing my oil pump to a high flow pump (as I was trying to fix a low pressure problem). The combination of doing both at once, put my oil pressure at dangerous high levels. Silly mistake on my part, and a total waste of money on this oil (cant return it, its been used for 15 minutes!).But this is good oil to get for an old low pressure engine. Just don't put it into an engine that already has decent pressure with a lower viscosity oil.

Good deal

Great for the small engine and summer

Bueno

Great oil, been running it in my Harleys for many years

Have been using this for my old 1987 model car since 1990...I have resist switching to synthetic or semi synthetic because I do not want to take a chance on engine leaking. This was a problem on early synthetic and I read that the newer synthetic do not have this problem anymore, but why take a chance..The 5 quarts are a good value when they are selling for around $25, but it seem the price has went up.Not sure I will buy them anymore if they are the same as buying the 1 qts, since I have to use a funnel for the 5 quarts due to clearance on my rear engine car.

If you are at 100,000 or more miles on your V-8 5.3l Vortec engine, you better go to 10w-40 and then to 20w-50 at some point. The 5w-30 OEM recommended viscosity is not going to hold up. These will quiet that engine down and run like a champion. I have a 2007 GMC Sierra 5.3l vortec. Switched to 10w-40 in 2010. Been with that the last 10 years. Just switched to 20w-50 last year; quiet, smooth, and powerful. I use the bigger oil filter like the ecotecs call for, AC Delco PF-63 or equivalent e.g. Champion/LuberFiner PH10063, more flow and more oil, less start up tapping. I don't hear any piston slap either. 165,000 miles on engine and still running strong! So, December thru February it's 10w-40. March thru November it's 20w-50. We live in SE North Carolina, so the heat is conducive for the thicker oil. If I lived far up north like Connecticut or so, then I would use 5Water-30 in the winter, but we don't so this is the far better solution!

Me funcionó bastante bien para el cambio de

Un aceite fino y de gran calidad para los motores.

Para motor 2.0 queda al millón