I have a 1990 Bentley with the old style solid lifter engine. Pennzoil GTX Classic (high zinc) is made in the 10w-40 weight. I can find the 20w-50, but not the 10w-40 here in the USA. I find It in Europe but shipping here is not a good plan. Is there a source anyone has found here in the USA?
Source for Pennzoil classic 10-40?
- Thread starter Rick7
- Start date
You can find Pennzoil in Europe, really?
Plenty of 5W40 FS Euro oil should have enough Zn.
Check the VOA database.
https://bobistheoilguy.com/forums/threads/voa-database.360118/
Plenty of 5W40 FS Euro oil should have enough Zn.
Check the VOA database.
https://bobistheoilguy.com/forums/threads/voa-database.360118/
You could also use BITOG's own search engine powered by kschachn.
https://bobistheoilguy.com/forums/threads/high-zinc-oils-available-in-2023.373430/#post-6619568
https://bobistheoilguy.com/forums/threads/high-zinc-oils-available-in-2023.373430/#post-6619568
There are many suitable alternatives to that oil here; Motul, Driven, etc. Many more choices if you include synthetics.
Triple_Se7en
$50 Site Donor 2024
Castrol GTX High Mileage 10w40 (try at Kroger or Dollar Stores)
Valvoline VR1
Valvoline VR1
Castrol GTX Classic is unfortunately only available in 20W-50.
Valvoline VR1 is available in 10W-30 and 20W-50.
Mobil 1 Turbo Diesel Truck 5W-40 is also gasoline rated, and it has higher levels of ZDDP. It is widely available.
Here are some reasonable cost domestic 10w-40 choices with your zinc desire:
https://www.amsoil.com/p/amsoil-z-rod-10w-40-100-synthetic-motor-oil-zrd/
https://drivenracingoil.com/i-30497806-hr5-10w-40-conventional-hot-rod-oil.html
https://drivenracingoil.com/i-30497807-hr6-10w-40-synthetic-hot-rod-oil.html
https://www.amsoil.com/p/amsoil-z-rod-10w-40-100-synthetic-motor-oil-zrd/
https://drivenracingoil.com/i-30497806-hr5-10w-40-conventional-hot-rod-oil.html
https://drivenracingoil.com/i-30497807-hr6-10w-40-synthetic-hot-rod-oil.html
Thank you for all the suggestions. High Milage GTX 10w-40 does not have the zinc content of the Classic GTX. It is strange that it is readily available in Europe, but not here? https://rimmerbros.com/Item--i-RX1897GTX
Triple_Se7en
$50 Site Donor 2024
Google Search.... 'zinc additive for motor oils'.
Plenty of options came up in my search.
Plenty of options came up in my search.
Look at one or the other don't add both together, generally the ppm of zinc and phos will be around the same because you're looking at the same additive from a different angle.
If you want a high zddp oil, look at Valvoline VR1, it's available in multiple viscosity grades and is formulated specifically for high performance gasoline engines with solid lifters. Walmart these days carries 5qt jugs of it in 20W50. There's also 15W50 Mobil1 it still has like 1200ppm of phos too.
I get what you're saying but you'd be hard pressed to ever see a notable delta in the two additives blended in an oil. They'll never be the same true but they're never far apart. I believe it's 1100 of one and 1300 of the other in delvac extreme.
I like that era Bently and Rolls, classic look, please post a pic.
If it was me, I would use either M1 Turbo Diesel Truck 5W40 or M1 15W50. Both Mobil 1's are API SN and carry around 1300 ppm zinc. Well above the typical ILSAC of 600 to 800 ppm zinc.
A 5W40 synthetic will do everything a 10W40 mineral would do, and more.
If it was me, I would use either M1 Turbo Diesel Truck 5W40 or M1 15W50. Both Mobil 1's are API SN and carry around 1300 ppm zinc. Well above the typical ILSAC of 600 to 800 ppm zinc.
A 5W40 synthetic will do everything a 10W40 mineral would do, and more.