View Full Version : Oil for 35HP Vanguard Big block

08-01-2011, 01:47 AM
Both of my mowers are coming up due for an oil change. What type if oil do I need to run in this engine? I was told by my dealer he would run Castrol SAE HD 30wt.
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08-01-2011, 07:50 AM
Follow your dealer's suggestion and you should be fine.....

08-01-2011, 09:28 AM
is there any zddp in straight wt oil anymore? it is bareley in multi weight now and thats not enough, we use diesel grade oil now.

08-01-2011, 01:21 PM
You can use anything you like, But..... As long as you use what the OEM's recommend, They should know what's best for their engines.


08-01-2011, 01:51 PM
10 30 castrol is what we normally use too. There is a few guys that run amsoil 10 30 for a little more. Opti 4 claims they double the warranty of your engine if you start with it and use it exclusivly. I am looking into it to make sure, but if they double the vanguard warranty, it would mean a 6 year warranty on all internal engine parts! Might be the best way to go...