oil recommendations? Options

[LCOX]

What oil do you recommend for my 914 daily driver? I use Castrol GTX 10/40 but have seen some posts that you shouldn't use any multi-viscosity oil less than 20/50 because of lower oil pressure at idle that may cause a flickering oil pressure light. I've also heard some people who use straight 40 weight or even straight 50 weight oil. What weight and brand is best for good oil pressure?

[Dave_Darling]

The diesel oils have also been reformulated to reduce the ZDDP content, which is unfortunate. They are still recommended by a number of good shops, though.

I would stay away from SUPERTECH oil, and also from all of the no-name oils.

VR-1 is very widely available, and works well. Brad Penn, Joe Gibbs, etc., work well but are less widely available. Mail order works, but can be less convenient.

The original weight specified was a straight 30-weight. Multi-grade oils were in their infancy when our engines were designed, though, and today's multi-grade are immensely better than what was available then.

Most people run 20/50 oil in their air-cooled 914s. Very little down-side to that from what I can tell.

Engines that have been rebuilt can have the tolerances changed and require different grades of oil; talk to your engine builder or machine shop about what they recommend if your engine is no longer stock. In general, tighter tolerances will need a lighter-weight oil, but there may be specific things the builder wants from the oil.

I run Brad Penn in my 914, but will probably switch to VR-1 when my current case runs out. My wife's 911SC gets Rotella T because that's what our pro mechanic recommends.

--DD

[thelogo]

The diesel oils have also been reformulated to reduce the ZDDP content, which is unfortunate. They are still recommended by a number of good shops, though.

I would stay away from SUPERTECH oil, and also from all of the no-name oils.

VR-1 is very widely available, and works well. Brad Penn, Joe Gibbs, etc., work well but are less widely available. Mail order works, but can be less convenient.

The original weight specified was a straight 30-weight. Multi-grade oils were in their infancy when our engines were designed, though, and today's multi-grade are immensely better than what was available then.

Most people run 20/50 oil in their air-cooled 914s. Very little down-side to that from what I can tell.

Engines that have been rebuilt can have the tolerances changed and require different grades of oil; talk to your engine builder or machine shop about what they recommend if your engine is no longer stock. In general, tighter tolerances will need a lighter-weight oil, but there may be specific things the builder wants from the oil.

I run Brad Penn in my 914, but will probably switch to VR-1 when my current case runs out. My wife's 911SC gets Rotella T because that's what our pro mechanic recommends.

--DD

Damn dave i know you are the man but your wife drive s a 911sc

Not bad brother ,not bad at all