Switching Oil

[BK]

Ok so if im switching from synthetic (mobile 1 15/50) to say regular Castrol strieght 40 do I have to worry about a little synthetic left in the bottom of the pan mixing with it?

[Floored]

No :d

[SmokinLowriderSS]

My only question is why the change?

[INEEDAV]

Depending upon the two oil additive packages you could have an issue. Some oils additives attack the additives of other oils.
Personally I would fire up for a short bit to mix the new oil with any residual, and then drain it and replace the filter.

[HammerDown]

BK, just make the change...nothing to worry about as both oild are compatible with each other. However if you want just fill your oil pan with a few qts of some cheap no-name 30 wt, run for a few minutes and then dump it.
PS. consider Valvoline VR1(Race Blend) 50 wt. I've been a big fan of Kendall and Castrol straight weights. BUT I've never seen anything hold up like the Valvoline.

[BK]

Yeah Hammer I ran the Kendal GT1 20/50 the first two seasons on the motor and The Valvoline VR1 20/50 the last few. I agree the VR1 is great oil, I just decided this year to go with the Moblile 1 synthetic to try it out. Problem is im going throuhg more oil with the synthetic and I was told it may help to go to a strieght 40 non synthetic oil. At this point im willing to try whatever to see if it helps.
Heres the thread with my problem im having.
http://www2.***boat.com/forums/showthread.php?t=85502

[Beer-30]

Personally, if you think the lighter oil is causing you to "burn" more, I would just try switching to 20-50 synthetic before going backwards. Or, if you find a straight 40 or 50 synthetic, give that a try. In my opinion.

[cola]

Anyone use Torco 50w. Syn.

[Beer-30]

Anyone use Torco 50w. Syn.
I have not used Torco motor oils (yet), but I have their 75-140 full syn in the rear of the dually, and the RTF Racing Trans Fluid (gear lube, not auto trans) in my Bravo-1.
I have an incredible first hand experience with Torco lube. I don't think it can be matched.

[BK]

I was at the auto parts store last night and noticed Valvoline has come out with a VR1 streight 60w racing oil. Anyone now anything about this? Good or bad and why would anyone need or want to run 60w oil?