GTX Classic 20W-50 Conventional Motor Oil, 1 Quart, Pack of 6

good price, fast delivery

I use it on my 1960 MGA because of the high zinc content. Delivery was very quick.

I’ve been using Castrol GTX Classic 20W-50 in my lawn equipment, and it’s been absolutely great. It provides solid protection, smooth operation, and helps extend the life of my mower and trimmer. This oil is especially good for older engines or small engines that run hot and need a thicker oil. The only downside is that it’s hard to find in stores, so I usually have to order it online. But when I can get it, it’s worth every penny. If you're maintaining older engines or heavy-duty lawn tools, this oil is a reliable choice. Highly recommended!

Great oil!

Great alternative to zinc additives or running a standard oil in older flat tappet cars. I have used this and Lucas classic car formula. It feels like Lucas does a better job with cleaning and cooling, but this seems to work well too. This is cheaper usually so well worth it. Put it this way, if I can get Lucas on sale where its within a few bucks of Castrol, I'll buy Lucas. If Lucas is too expensive or too hard to get, I'll happily use the Castrol.

Great. Using on flat tappet camed Pontiac. Has the necessary zddp.

was what I wanted wish was offered in 10/40 but is cheaper than buying additional additives.

Very good oil for older motors,my 340 has higher oil pressure with this weight