View Full Version : Royal purple or merc oil?

04-18-2014, 09:24 PM
Just naught a 2008 LSV from the original owner. Boat is in perfect shape, and the guy said he always ran royal purple motor oil. The manual says to run merc. Should I change or stick with the rp?

04-18-2014, 09:32 PM
I use the royal purple myself in my boat and it is a great product. My owners manual says penzoil but it is just a recomendation. I would stick with the royal purple it is a great oil and will most likely cost less than the merc oil.

04-18-2014, 09:43 PM
Another option is Rotella. It is a recommended oil for my engine.

Cigars n scotch
04-20-2014, 04:23 PM
^^I use Shell Rotella and have for 3 years, works great and is the oil that a lot of Supra owners on the Supra forum use as well. You can find it at Wally World on sale for like $12/gallon so all you need is another quart if your engine takes 5 quarts. I usually double up when I buy.

04-20-2014, 05:58 PM
Rotella for sure!

04-20-2014, 10:51 PM
X4 on rotella!