viscosity change in 1987 Alfa Romeo???

[cheech279]

I took my Alfa Spider to a top indie shop today to get a safety inspection needed to renew my license tag. The owner of the shop mistakenly topped off my 7 quart sump with 3/4 quart of 5w-20 Lubrigold synthetic I had in a shopping bag on the front seat.

The sump also had 2/3 bottle of Liqui-Moly Oil Saver that I added in the spring to soften up the engine seals/gaskets. The sump is not overfilled, but are there any ill effects to adding a quart of 5w-20 synthetic to 6 quarts of Rotella 15w40 in a 30 year old DOHC 4 banger? The car is now in central Florida full time.

 

[Shannow]

Won't hurt a thing.

 

[Astro14]

Originally Posted By: Shannow
Won't hurt a thing.


+1

 

[pbm]

Originally Posted By: Astro14
Originally Posted By: Shannow
Won't hurt a thing.


+1


+2

The only negative that I see is that it might burn off a little quicker....and I say 'might' not 'will'...

 

[Quattro Pete]

Originally Posted By: NormanBuntz
but are there any ill effects to adding a quart of 5w-20 synthetic to 6 quarts of Rotella 15w40 in a 30 year old DOHC 4 banger?

Nah.

 

[BrocLuno]

You're good

 

[JR]

Good to go.

 

[GatorJoe]

Can't disagree with the opinions above. But more importantly to me, will you post some pics of your Alfa? I love the mid-80s models.

 

[Merkava_4]

If it was my Alpha Romeo, I wouldn't want one single ounce of 5W-20 in there. I'd drain the whole sump out and start over. Purge the engine of that poisonous evil fluid!

 

[Garak]

You coming up this weekend instead, Merk? It's going to go below -30 C, and I thought we could test some thick oils.

 

[Merkava_4]

 

[SR5]

OP, you will be fine, no worries.

Please post some pics of the Alfa Romeo, I think they make a very good looking car. The GTV of that era, in gun metal grey, was my dream car as a kid.

 

[cheech279]

Originally Posted By: Merkava_4
If it was my Alpha Romeo, I wouldn't want one single ounce of 5W-20 in there. I'd drain the whole sump out and start over. Purge the engine of that poisonous evil fluid!


Merkava, thanks for your input on my Alpha Romero (sic).